Three people have been arrested over the attempted murder of an Indian military general in central London.
Lieutenant General Kuldeep Singh Brar, 78, had his neck slashed by a gang near Marble Arch on Sunday.
One woman in her 40s and two men in their 30s have been detained in the West Midlands.
Police investigating the death of a homeless man have charged a man with murder.
Ghodratollah Barani, 26, of no fixed abode, will appear at Westminster Magistrates' Court tomorrow charged with the murder of Mark Morrison, 46, Scotland Yard said.
Mr Morrison, who was originally from Scotland but had been sleeping rough in London for some time, was found strangled at Marble Arch in the early hours of June 21.
Detectives have named a man who found murdered at Marble Arch on Thursday morning. 46 year-old Mark Morrison was originally from Scotland and had been sleeping rough in London. A post-mortem gave his cause of death as strangulation.
Police are trying to discover the identity of a man found dead at Marble Arch.
They were called at 3.30am this morning to reports that a man had collapsed.
It's thought that the victim had been assaulted.