Police say a man is in a serious condition in hospital after being attacked on Loch promenade, Douglas, in the early hours of this morning.
It happened at around 3am, near the prom's junction with Walpole Avenue.
The man's head injuries are described as 'significant'.
Inspector Mark Newey is urging anyone who was in the area at the time to come forward and call him via 631212.
He says officers understand a man involved in the incident was picked up by an unknown vehicle just after it happened.
Police are asking the driver of that vehicle to contact them.
Bed shortages at Noble's are 'no threat' to TT 2026
Commissioners say residents left in 'void' over plans for onshore windfarm
Charity ball in Douglas to support air ambulance and neonatal care
Former TT racer died from head injuries after crash
Two large retailers 'express interest' in Next store in Douglas