SAN FRANCISCO (AP) -- California authorities have issued an Amber Alert for a 1-year-old boy police say was kidnapped from San Francisco and traveling with a possibly suicidal man.

The California Highway Patrol said Friday that the boy, Makai Bangoura, is about 3 feet tall (nearly 1 meter) and weighs 40 lbs (18 kilograms). He is African-American, has brown eyes and brown hair and was abducted May 12.

The CHP says the suspect, 30-year-old Jason Lam, "may be suicidal" and should not be approached without law enforcement help. He's an Asian male and was last seen driving a 2000 tan Toyota Corolla with the license plate 5SEY238. He is about 5-foot-3 and weighs about 145 lbs.

No other details were immediately available.

The San Francisco district attorney's office plans a 4 p.m. press conference.