Police are appealing for witnesses after an altercation on a fishing boat in Ramsey.
It happened at around 2.30am on Saturday in the area of the quayside opposite the Commercial Pub.
Three males are believed to have been involved with one requiring hospital treatment.
One man was arrested and is currently assisting with enquiries.
Anyone with information is asked to contact Ramsey Police Station on 812234.
Chance for children to switch on village's Xmas lights
Health passports to help those with learning disabilities
All the Xmas light switch-on events happening around the Island
Over 60% of government money spent on Island
£45k spent by government on pool this year
Over £1k raised for air ambulance with dog walks
Over £50k spent on carbon literacy training
Tholt Y Will to reopen as Mountain Road stays shut