Police say Sebastien Lalonde has not been seen since January 15. ((SPVG))

Police are asking for help in finding a 21-year-old Gatineau man last seen over a week ago.

Gatineau police said Sébastien Lalonde likely took his red mountain bike to go fishing on the Saturday, January 15.

Lalonde has not contacted his family since that date, police said.

He is described as five-foot-eight-inches tall, 140 pounds has brown hair and eyes and was wearing a blue coat and toque and beige pants.

Police ask anyone with information to contact Detective Sergeant Proudfoot.