South Carolina ? A murder suspect ran through an elementary school Monday as he fled police trying to arrest him, and schools in the area were locked down while officers tried to find him.

The man was inside Watkins-Nance Elementary School only briefly, entering through the front and running out a rear door, Richland County sheriff’s spokesman Chris Cowan said.

Police didn’t know whether the man was armed, but he was considered dangerous, Cowan said.

Officers had gone to a nearby house with arrest warrants for two men wanted in a killing during an apparent robbery last week.

They arrested Larry Kenneth Brown, 47, but the second man, Eugene Frost, 34, saw officers when he arrived at the house and fled on foot, police said.

Watkins-Nance and three other schools in the area were locked down, with no one allowed to leave or enter, while police searched for Frost.