Detectives are continuing to appeal for information following the murder of a homeless man in the disused Partnership House office block in Waterloo.
Officer searched the building and found a man with serious head injuries. He was pronounced dead at the scene. He is believed to be a 28-year-old Polish man.
A post mortem held at Greenwich Mortuary on Tuesday recorded the cause of death as multiple blows to the head, torso and legs.
Police officers believe that they know the identity of the dead man and are working with the Polish embassy to trace his family.
Acting Detective Chief Inspector Russell Taylor has reiterated his appeal for anyone with information to call the incident room on 020 8721 4155 or Crimestoppers on 0800 555 111.
Eight men, aged between 21 and 35, were arrested at Partnership House on Monday. Three men have been bailed pending further inquiries; five remain in custody at south London police stations.
On Wednesday afternoon two further men were arrested after they attended a south London police station. They remain in custody.
Developers CPSL recently got the green light for a new hotel development on the site of Partnership House.