A 45-year-old man is in hospital with serious head injuries after an assault in Nottingham.
Nottinghamshire Police said a man was arrested in connection with the attack, on Lawson Street in Radford on Wednesday afternoon.
The victim is said to be in a critical condition at Nottingham's Queen's Medical Centre. A second man, 31, was treated for minor injuries.
A 30-year-old man is being questioned on suspicion of attempted murder.