Police are seeking public assistance to locate a 31-year-old man missing from Rasmussen.

Christopher Jacks, pictured, was last seen leaving a residence on Josephine Crescent about 2am on Wednesday, December 4 and has not been seen or heard from since.

Family and police are concerned for his welfare as his disappearance is out of character.

He is described as First Nations in appearance, about 175cm tall, with a proportionate build and brown hair.

Christopher, or anyone with information regarding his whereabouts, is urged to contact police.

Missing man, Rasmussen