has checked into rehab less than a month after several public altercations in which he appeared to be intoxicated.
The Oscar nominee, 45, entered a treatment facility in Northern California, PEOPLE has confirmed.
The first weekend in November, Brolin was allegedly involved in two separate confrontations caught on videotape posted by TMZ.com – a fistfight
at a bar in Santa Monica, Calif., and a shouting match
with a cabbie at a Del Taco drive-through in Los Angeles.
The actor split from his wife
, actress Diane Lane, in February after eight years of marriage