A 48-year-old man is in hospital with serious head injuries after a fight in a West Yorkshire street, say police.
It happened in Elland in the early hours of Sunday morning.
Officers say they found the injured man after being called at about 01:30 to a fight between a group of men on Stainland Road.
The suspects all fled the area.
Anyone who witnessed the incident is being asked to contact the West Yorkshire force.