PORTLAND — Authorities say a man has been badly burned in a hash oil explosion at his Tigard apartment.

The man, who has not been identified, was taken to a Portland hospital after the incident. An update on his condition was not known Monday.

Police had responded to his apartment Saturday night to find a window blown out and glass scattered around the parking lot.

The victim, who had been alone at the time of the explosion, came out of the apartment with visible burns to his body, neck and face.

Police say he had been trying to create hash oil, a process that involves the extraction of marijuana and use of flammables.

The incident remains under investigation.