Police in Los Angeles arrested a man Sunday in connection with a Facebook post that threatened shootings at local schools, sources close to the investigation told the Los Angeles Times. Police were notified of the post Sunday and found multiple weapons upon arriving at the man’s residence. No further identifying information on the man has been released. On Sunday, LAPD Chief Charlie Beck announced that officers would be patrolling city schools to protect against violent threats. The increased security is in response to the shooting of 26 people at a Newtown, Conn., elementary school last week.