Police have launched a murder investigation after a man's body was found at a house in Hull.
Officers went to Marlborough Terrace, Norfolk Street, after receiving information from a man who walked into a police station at 2045 BST on Tuesday.
The 40-year-old victim has not yet been identified.
A post-mortem examination will be carried out on Wednesday.
Police say a 43-year-old man is being questioned on suspicion of murder.
The house has been cordoned off while forensic examinations are carried out.