Los Angeles police say a sword-wielding man shot to death at a Scientology facility in Hollywood apparently had psychological problems.

It remained unclear Monday why Mario Majorski showed up at the church with a pair of samurai swords and allegedly accosted an armed security guard, but the Los Angeles Times said Majorski had caused problems at the facility in the past.

"We believe there is some sort of mental issue," Los Angeles Police Department Detective Wendi Berndt told the newspaper, adding that Majorski appeared to have been a former Scientology member.

The investigation into Sunday's shooting has thus far cleared the guard who fired the fatal shots of any wrongdoing.

Security video captured the incident and appeared to back up the guards' version of the incident.