Man's knife killing 'a case of mistaken identity'
A man who was stabbed to death while having a cigarette outside a pub in central London was mistaken for someone else by his killers, police believe.
Christopher Foster, 34, from Walworth, south-east London, had a four-year-old daughter and worked at a law firm.
He was stabbed shortly before midnight on Friday in Borough High Street, Southwark, and died later in hospital.
A woman, 32, was bailed after being arrested on suspicion of assisting an offender.
A post-mortem at Greenwich Public Mortuary gave cause of death as a single stab wound to the back.
Det Ch Insp John Sandlin, of the Metropolitan Police said: "At this stage of our investigation, this appears to be a case of mistaken identity."
Mr Foster was with a male friend in an alleyway outside St Christopher's Inn.
Witnesses said they saw seven suspects wearing hooded clothing and carrying baseball bats and at least one knife.
The group ran towards Elephant and Castle.
Mr Sandlin said the group went on to have an altercation nearby with another man, who managed to run away from them.
"I think they were looking for someone," he said.
"Chris was an innocent man. There was no reason for him to have been attacked. He was a working guy out with his mates having a beer.
"I need to find some witnesses who have seen this group in Borough High Street or the alleyways that run off it, before the incident, or afterwards, when five of them ran off down Mermaid Court."
A friend of Mr Foster's said on Twitter: "A really nice guy and such a waste of a life."