Detectives launched a murder inquiry today after a Polish man was found beaten to death behind a supermarket.
Investigators suspect the man, whose age is not known, suffered fatal injuries in a drunken street brawl.
Local officers responding to reports of a stabbing discovered the victim behind Aldi in Haringey, north London, at about 9.40pm yesterday.
Paramedics had arrived within minutes but the man was pronounced dead at the scene, which was off High Road, near Parkhurst Road.
A Metropolitan Police spokesman said one man was arrested immediately and six more men were held at nearby addresses.
He said all seven remained in custody today at several north London police stations where they will be questioned.
The spokesman added: "The Homicide and Serious Crime Command have been informed and have attended the scene.
"Officers are working to establish the identity of the deceased and trace any next of kin. A post mortem examination will be arranged in due course.
"Anyone witnesses or anyone with any information that could assist police can call Crimestoppers anonymously on 0800 555 111."