Detectives investigating the murder of a father-of-four found dead in his east London house have arrested four people.
Sellathurai Easwaran, 40, died from head injuries in his bed at his home in Newham on 7 November.
It is believed he had been assaulted by four young men outside a shop the day before. He was taken to hospital by a passing police patrol but later went home.
The four arrested men had been held in Newham on Wednesday.
Officers were called to the house in St Winefride's Avenue by the London Ambulance Service and found Mr Easwaran in his bed. He was pronounced dead at the scene.
A Metropolitan Police spokesman said it was believed that the victim had been assaulted outside the Akgul Foodstores, a 24-hour shop in Barking Road in Upton Park east London, at about 0230 GMT on 6 November.
Officers spotted the victim lying on the ground at about 0300 GMT and took him to an east London hospital.
Police believe he left hospital later that morning and went home.
The spokesman said: "Officers are in the process of studying CCTV but now believe that the victim had been involved in some sort of altercation with up to four males outside the store shortly before he was found.
"It is not clear if he had been robbed.
"The four males are thought to be aged in their late teens to early 20s and were wearing either hoods or baseball caps."