News brief

A man with a rifle killed an off-duty New York City police officer and three other people before taking his own life at a Manhattan office tower on Monday, according to officials. New York City Mayor Eric Adams said Tuesday that investigators believe the gunman was trying to target the headquarters of the National Football League but accidentally entered the wrong set of elevator banks. The Las Vegas resident, who played high school football in California nearly two decades ago but never in the NFL, had a history of mental illness, police said.