Brandon Louis Gill faces murder charges in connection with the killing of 64-year-old Romeo Lansang, of South San Francisco, on March 25, 2004, according to the District Attorney’s Office.

Gill’s attack on Lansang with a kitchen knife that day was without any known motive, said Chief Deputy District Attorney Steve Wagstaffe, who is prosecuting the case.

Gill allegedly walked up to Lansang from behind in the 700 block of Easton Avenue at about 1 p.m. and fatally stabbed him, according to a police report.

Gill then allegedly tried but failed to carjack a woman in a nearby car, according to the district attorney’s office. He allegedly fled the scene but was later arrested in Monterey County on unrelated carjacking charges.

Gill, formerly of King City, suffers from schizoaffective disorder and was found not competent to stand trial in June 2005 and committed to Napa State Hospital.

Earlier this year, the hospital issued a report stating that Gill had marginally regained competence to stand trial, according to Wagstaffe.

Forensic psychiatrist Dr. George Wilkinson testified in court Monday that since evaluating Gill several times in February and March, after Gill had been returned to jail, “his illness has continued to worsen.”

Gill’s irregular use of prescribed antipsychotic medication, combined with the jail setting that has made Gill fearful, have contributed to the downward spiral, Wilkinson said.

Wilkinson recommended Gill be returned to Napa State Hospital, a more structured treatment environment, he said.

Judge Craig Parsons concurred, finding Gill not competent to stand trial at this time, and ordered he be returned to Napa as soon as possible, where he will be administered medication, either voluntarily or involuntarily.

Gill could return to stand trial at a later date if he is found to have regained competency, but according to Wagstaffe, it is unlikely that would happen anytime soon.

“In circumstances like this, it’s usually many, many months to years until he gets there,” Wagstaffe said.