A 73-year-old man has died after a suspected road rage incident in Birmingham.
Police say he was involved in an altercation with a second man in Shenley Lane on 15 September and died in hospital 12 days later.
The pair had pulled up near the junction of Loftus Close and became involved in a confrontation, during which he hit his head on the road.
The second man, 67, has been arrested, West Midlands Police said.
Det Con Emma Safe said officers were appealing for witnesses to establish how he came by his injuries.
"We are investigating whether the two drivers had been driving in an erratic or aggressive manner further up Shenley Road, at the junction of Meadow Brook Road.
"I would urge anyone who saw either the confrontation on Loftus Road, or anything involving the two vehicles before that, to call us on 101."