LOS ANGELES - THE Los Angeles County Coroner's Office has ruled the death of Mark Ruffalo's younger brother a homicide.

Coroner's spokesman Craig Harvey says an investigation closed on Wednesday determined that someone shot 39-year-old Scott M. Ruffalo in the head.

Beverly Hills police arrested, but later released, a 26-year-old woman suspected of the shooting. They have not publicly named any other suspects.

The woman's attorney said at the time of her release that Ruffalo shot himself in the head playing Russian roulette. Jail records do not indicate she has been re-arrested.

Police have not released a motive in the case and a police spokesman did not immediately return a message seeking comment.

Ruffalo was found shot early Dec 1 and died a week later. -- AP