Shrewsbury murder: Mystery surrounds why Liverpool boy stabbed to death was in the town

Police said they have no idea why Michael Warham was in the Meole Brace area last week when he was stabbed in a violent attack.

Officers said a number of lines of investigation were being looked into but added they don't yet know where he was staying, or who he was with.

But they do believe he was specifically targeted rather than being the victim of a random attack.

The teenager was found collapsed in Wayford Close last Monday with a single stab wound, before being rushed to hospital. He underwent surgery but died on Thursday morning.

Detective Chief Inspector Paul Moxley, of West Mercia Police, said: "We don't know whether he was visiting or what he was doing. We don't know where he was staying or who he might have been with.

"It is quite unusual, but lots of inquiries are going on with friends and relatives in Merseyside to find out why he was here."

Michael's family this week paid tribute to a "remarkable" boy, as police re-issued an appeal for information.

Officers arrested three people who are currently on bail and are now concentrating investigations on three areas of Shrewsbury.

The first area is the Stapleton Road/Wayford Close area of Meole Brace where police are asking for people to think back to Monday night last week at about 9.40pm.

Officers are also looking for information from people in the area of McDonald's in Meole Brace at about 10pm.

A third line of inquiry has also drawn police to look at a group of three or four white men in their late teens, early 20s seen at Royal Shrewsbury Hospital at about 11pm.

The men are believed to have been wearing hooded jumpers and tracksuit bottoms.

Detectives have asked for anyone with information to contact police using the non-emergency 101 number, quoting the incident reference 775s of August 1 or call Crimestoppers on 0800 555 111.

Information can also be passed on anonymously through Crimestoppers on 0800 555 111 or via www.crimestoppers-uk.org