The manhunt for suspected 'knifeman' Habibur Masum has entered its second day, after a 27-year-old woman was stabbed to death next to her son's buggy in broad daylight.
A supermarket owner attempted to save the victim after finding her lying face down on the pavement next to her five-month-old baby moments after she was fatally stabbed in Bradford city centre.
Police issued a warning yesterday after naming and releasing CCTV images of the man suspected of having killed the woman yesterday afternoon.
Habibur Masum, 25, from the Oldham area and known to the victim, is still at large and members of the public have been urged 'not to approach' him if seen but to 'call 999 immediately'.
According to eyewitnesses, the woman was stabbed 'four to five times' in the neck while shopping with a friend. The baby was not harmed.
Habibur Masum, 25, (pictured) is being hunted by police who are appealing for members of the public to report any sightings of him
A murder investigation has been launched after a woman was stabbed to death in Bradford
Geo Khan, 69, who runs a fruit a veg shop in Bradford, tried to resuscitate the woman, who was one of his customers.
He said: 'I was working on Saturday and I heard screams and ran out of my shop. I saw that the lady was lying face down on the pavement next to a pushchair with her five-month-old baby inside.
'I turned her over. There was a lot of blood and I checked for a pulse, but couldn't find one. I could see the knife wounds to her neck and I tried to do CPR. Her friend was screaming.'
Mr Khan said a doctor who was passing in a car stopped to help. 'He picked up a pulse and I went to get a sheet to put over her until the ambulance came,' he added.
The mother is understood to have been pushing her baby son in his pram at the time of the fatal attack.
Masum, described as an Asian man of slim build, is pictured on CCTV wearing a duffle coat with three large horizontal lines of grey, white and black, as well as light grey tracksuit bottoms and maroon trainers.
Masum is pictured on CCTV wearing a duffle coat with three large horizontal lines of grey, white and black, as well as light grey tracksuit bottoms and maroon trainers
A witness also reported seeing him wearing a grey hoody with the hood up. He is believed to have links to the Burnley and Chester areas.
A source who described himself as a friend of Masum's told MailOnline this evening that the suspect had come to the UK from Bangladesh two years ago to study.
He said that Masum was a married man who had been living in Oldham, Manchester and had wanted to go travelling across Europe.
Just days ago the suspected attacker had shared a video on his YouTube channel, vlogging his trip from Manchester to Barcelona as a Bangladeshi student in the UK.
The wannabe influencer captured his trip from the moment he boarded the Ryan Air flight to landing in the Spanish city, before encouraging his 14 subscribers to continue following for more upcoming videos.
The master's student, who according to his LinkedIn profile is studying Digital Marketing at the University of Bedfordshire, describes himself as an 'adventure lover' and warns 'toxic people to stay away' from him.
Masum is a vlogger and YouTuber. He has previously posted videos of shopping hauls in Primark
It is understood Masum is a master's student at the University of Bedfordshire studying Digital Marketing
In another video from January, Masum is seen filming himself walk through a housing estate as snow falls down. He warns his followers who are new to the UK not too 'stay out in the cold too long' as they could get chest problems.
Other clips show him doing a fashion haul in Primark while shopping for winter clothes. He records himself picking up a range of jumpers before filming the children's winter wear on offer before leaving with two full bags.
The man, who was previously based in the city of Sylhet, in eastern Bangladesh, also shared clips to his 4,300 followers on Facebook showing them how to prepare a hospital bag for 'your newborn baby'. Another showed him setting up a child's cot.
Mr Ahmed who works at the visa company that helped Masum get a Schengen visa to travel countries in Europe said tonight that he was 'completely shocked' by the news.
One video shared to his 14 subscribers on YouTube showed him trying on different jumpers in Primark
He told MailOnline: 'I know him as a friend. I am shocked, really shocked about it. I am surprised, he's a nice and good person. I can't believe the situation. He had been in the UK for nearly two years, he is studying.'
'I know he's married,' Mr Ahmed, who works for Samin's Visa Support Centre added.
'Two months ago he was living in Oldham, Manchester, but which area I do not know. He's a student so he wanted to go travelling and I helped him get a visa as he wanted to visit Europe.
'I know him from seeing him in local places, playing football and cricket, so I know him from that. Then he told me he wanted to go visit Europe and said he wanted to apply for a visa.
'He is a nice person from my knowledge but I have not heard from him since about two months ago. I am really shocked about this.'
In January, Samin's UK Visas Support Centre shared a photo of Masum's Schengen visa as a success story.
A photo of the suspect's visa to Portugal read: 'Happy to help you. Schengen Visa from UK. Good idea, better application visa.'
In January, Samin's UK Visas Support Centre shared a photo of Masum's Schengen visa as a success story
Another video on Masum's YouTube channel showed snow falling in the UK as he warned people to not stay out in the cold for long
Police today continued to search for the knifeman, who ran away following the attack, leaving the woman dying on the pavement
She was outside a convenience store, waiting for her friend who had gone to buy goods inside, when she was set upon.
Detective Chief Inspector Stacey Atkinson, of West Yorkshire Police's Homicide and Enquiry Team, said: 'We have had significant resources following up a number of lines of enquiry to locate Habibur Masum but at this time his whereabouts are unknown.
'A knife was recovered from the scene of the murder, but we cannot say if Habibur Masum is armed, and I would urge anyone who does see him not to approach him but to call 999 immediately.
'If anyone has any information about his movements or whereabouts since 3:20pm on Saturday please contact police as a matter of urgency.
'We understand that the murder of a young woman in such shocking circumstances has caused considerable concern in the local community.
'Residents can expect to continue to see a significant police presence in Bradford as we make further enquiries and conduct reassurance patrols in the area.'
Today forensic officers, dressed in white suits, continued to gather evidence from the scene and a large police cordon remained in place.
A police cordon put in place around the scene in Westgate, Bradford yesterday
Adhi Aziz, 41, owner of Venice Barber Shop, said the woman was from Oldham, Greater Manchester, and had been 'tracked down' by her attacker, who is thought to be known to the victim.
'We were really busy on Saturday and didn't see anything until all the police started to turn up,' Mr Aziz said.
'The lady was attacked outside the Westgate corner shop and the man that stabbed her has run off down the road.
'My wife told me the woman was pushing a pram with a baby inside when she was stabbed, and that she came from Oldham and the man has tracked her down.'
Police officers were also combing car parks, bushes and waste ground near the Harp of Erin pub, on Chain Street, in case the killer dumped the murder weapon as he escaped on foot.
Detective Chief Inspector Stacey Atkinson, of West Yorkshire Police's Homicide and Major Enquiry Team, described the stabbing as a 'shocking incident that has happened in broad daylight.'
She said that part of the city was busy at the time and the attack was 'witnessed by a number of people.'
DCI Atkinson said: 'A young woman has lost her life in the most awful circumstances, and we have extensive enquiries ongoing to locate and arrest the man responsible.
The horrific daylight killing took place in Westgate, at the junction with Drewton Road at 3.21pm on Saturday (police are pictured at the scene)
The victim was taken to hospital where she later died, West Yorkshire Police said
'We understand that this incident will understandably cause concern in the local community, and I would like to reassure the wider public that we are working tirelessly to investigate this horrendous crime and bring the person responsible to justice.'
She urged anyone with dashcam footage to get in touch.
In a joint statement, Bradford City ward councillors, Aneela Ahmed, Nazam Azam and Shakeela Lal, said: 'We are deeply shocked and saddened by yesterday's incident. Our thoughts and prayers are with the family and friends of the deceased.
'We would urge anyone who has any information relating to the incident, to contact the police.'
Bradford West MP Naz Shah, whose constituency covers the city centre, described the incident as 'really shocking'.
She sent her condolences to the woman's loved ones and also urged anyone with any information to get in touch with officers.