Surrey Police arrest four in Walton-on-Thames murder probe
Detectives investigating the death of a man whose body was found in the river at Walton-on-Thames have arrested four more people.
A man aged 25 has already been arrested and bailed on suspicion of murder.
Surrey Police have also arrested a man, 21, and a boy, 16, on suspicion of murder and a woman, 36, and a man, 34, for perverting the course of justice.
The man who died was found in the Thames on Thursday and a post-mortem found he died from head trauma.
Concerns were raised for a man thought to have been fishing in the area before he disappeared.
The four under arrest remain in custody, police said.