Authorities sought the public’s help Monday locating a man in his late 70s with cognitive impairment who went missing in Pico Rivera.
Secundino Robert Martinez, 78, is considered at-risk because of his mental health condition, according to the Los Angeles County Sheriff’s Department, which reported that he was last seen at about 9:30 p.m. Saturday.
Martinez is Hispanic, 5-feet tall, weighs 120 pounds and has white hair and brown eyes. He was wearing a black thermal shirt and pajama pants when last seen…