Los Angeles police will be present daily on every public elementary and middle school come January, and on any private or charter campus that requests a visit, Chief Charlie Beck said Monday.

Some officers will be in uniform, some will be in plainclothes and the campus visits will be part of their routine patrols, Beck said.

He wouldn't say how long the patrols will last and whether the daily campus visits would be permanent.

The increased police presence around campuses - plus an announcement that L.A. will hold its annual gun buyback after Christmas instead of in the spring - was the city's response to Friday's massacre at a Newtown, Conn. elementary school.

During a 1 p.m. news conference at the police headquarters, Beck also gave a few more details about a 24-year-old man who was arrested Sunday on suspicion of making criminal threats. Beck said patrol officers found out that Kyle Bangayan of Pomona had allegedly posted comments on Facebook regarding committing violence at an elementary school.

That prompted an investigation by police and FBI agents that led Bangayan's arrest at 11:15 a.m. at his parents' home in the 1200 block of North New Hampshire Avenue in Los Angeles.

Police said the threats didn't target specific schools but did reference Friday's shooting at Sandy Hook Elementary School.

LAPD officers and FBI agents seized nine firearms at the home, including rifles, a shotgun, handguns and ammunition.

However, a search of the suspect's home in Pomona didn't yield any weapons or related evidence, police said.

Bangayan was booked at LAPD's downtown jail. His bail has been set at $500,000, and the investigation is ongoing, police said.

On Monday, Beck said the department would be extra vigilant and that the fatal shooting of 26 children and adults broke a cultural barrier, by targeting the most vulnerable.

"It is our job, all our jobs...to make sure that we resurrect that barrier and that our children are safe," Beck said.