By msnbc.com staff

Updated at 3:22 p.m. ET: LAS VEGAS — Two chimpanzees got loose in northwest Las Vegas on Thursday, but one was shot by police and the other recaptured after being tranquilized, according to local media reports.

Police said that an officer shot and killed one of the chimps, and the second was later tranquilized, KTNV reported.

Police warned residents in the area to stay inside, and urged motorists to stay away.

Police shut down Ann Road from Jones Boulevard to Bradley Road and animal control officers were on the scene searching for the chimps, according to NBC station KSVN of Las Vegas.

Kay Carl Elementary School also was on lockdown, according to KSVN.

It wasn’t known where the chimps came from.

The city requires a permit to keep a wild animal, including a primate or monkey, according to the Las Vegas Sun.

Check back for details on this developing news story.