WASHINGTON — A man is in police custody after police say he threatened to “kill all the white people” in a Charles County town.

Police arrested 20-year-old Carlos Hollins of Waldorf, Maryland, Wednesday night after they say he tweeted a threat against La Plata residents.

On Wednesday, the La Plata Police Department was notified about a tweet on an account belonging to Hollins which read, “IM NOT GONNA STAND FOR THIS NO. MORE. TONIGHT WE PURGE! KILL ALL THE WHITE PPL IN THE TOWN OF LA PLATA.”

Hollins is facing charges of threats of mass violence.

Police say they will release more information as they investigate. The department says it is adding extra officers to patrol La Plata “in an effort to protect the public.”