Police have launched a manhunt after a mother pushing her baby in a pram was fatally stabbed.

West Yorkshire Police confirmed Habibur Masum, 25, is wanted over the attack.

The attack took place in the Westgate area of Bradford at 3.21pm yesterday.

A 27-year-old woman, who suffered multiple stab wounds, subsequently died in hospital.

The force claimed the woman was with her baby at the time of the attack, adding people should not approach Masum.

West Yorkshire Police claimed he was known to the victim but have not confirmed their relationship.

Det Ch Insp Stacey Atkinson said: "We have had significant resources following up a number of lines of inquiry to locate Habibur Masum but at this time his whereabouts are unknown.

"I would urge anyone who does see him not to approach him but to call 999 immediately."

He is also believed to have links to the Burnley and Chester areas.

Det Ch Insp Atkinson said the death of a young woman in "such shocking circumstances" has caused "considerable concern" in the community, adding that residents could expect to see more police officers in Bradford.