Matthew McConnell-Heglund last seen on Dec. 22.

Police have expanded the search for a Portland father missing since Dec. 22.

The Portland Police Bureau's Missing Persons Unit has issued an All Points Bulletin to all law enforcement agencies throughout the country for Matthew McConnell-Heglund.

Additional photos of McConnell-Heglund are also being distributed, including some showing a distinctive black, filled-in, 5-point star tattoo he has on his upper arm.

McConnell-Heglund is described as a white male, 29 years old, 6 feet tall, weighing 180 pounds, with receding brown hair and hazel eyes. He was last seen wearing a black jacket over a green polo shirt, khaki-colored pants and black shoes.

According to police, McConnell-Heglund had been out socializing at the Twilight Room in North Portland to celebrate a friend's birthday on Dec. 21. He went home with another friend to the Pier Park Apartments in the St. Johns area.

McConnell-Heglund was last seen sleeping on the living room couch. He was reported as having been gone when his friend woke up in the morning, and has not been seen or heard from since that time.

Police say concern for McConnell-Heglund's welfare grew after he failed to return home and especially after he did not see his children on Christmas. Family members, friends and neighbors have continued to cooperate with detectives, who have conducted detailed interviews, and numerous citizens have called in tips from all over the Pacific Northwest, related to possible sightings. None have been directly related to McConnell-Heglund, however.

Detectives are still seeking information from anyone who may have information about McConnell-Heglund's current whereabouts, his activities surrounding the time he was last seen, or any other information, which may assist in the investigation.

Anyone with information is asked to contact Detective Mike Weinstein, Missing Persons Unit, at (503) 823-0446 or Mike.Weinstein@PortlandOregon.gov.