A man threatening to shoot police has barricaded himself inside of an apartment in Tysons Corner.
Two people are dead following a domestic murder-suicide and barricade situation in Pasadena.
Police are in the process of negotiating with a man wanted for probation violation who told police he was armed and is refusing to leave his Frederick, Md., hotel room.
Police avoided a disastrous ending to a barricade situation in Adelphi that began late Monday evening and stretched into the early morning hours Tuesday.
A barricade situation in Charles County puts four schools on partial lockdown.