A man is fighting for his life after he 'injured himself' following a fight in front of horrified shoppers in a Tesco supermarket in west London, police say.
Police were called to West Cromwell Road, in Kensington, at about 3.05pm on Sunday to reports of a man injured inside the supermarket.
Paramedics found a man, believed to be aged in his late 20s, suffering a wound to his leg and in possession of a knife.
He was rushed to a nearby hospital, where he is in a critical condition, police said.
Officers now believe he injured himself following a fight at the supermarket.
An investigation into the incident was opened and two people - a man and woman - were followed by officers to Great Western Road, in west London. at about 4.10pm.
They had been seen leaving the scene shortly after the incident, police said.
They were arrested on suspicion of attempted murder by firearms officers, but have since been released without charge.
The incident comes after two people were murdered in the space of just a few hours on Saturday, with a man stabbed and shot in Bow and a teenager stabbed to death in Enfield.
A man is also fighting for his life after he was stabbed in the head just yards from the murder scene in Enfield on Sunday.
The Standard has launched an investigation into London's knife crime epidemic, with 11 people killed in just 16 days.
Anyone who witnessed the incident or has any information is asked to contact police on 101 or via Twitter @MetCC or Crimestoppers can be contacted anonymously on 0800 555 111.
