“Dear PoP,
All of the 400 block of Massachusetts Ave NW was shut down until a few minutes ago. There are a dozen cop cars and police tape keeping bystanders back. Any idea what’s going on? Oh, and one of the very few times I’ve seen an MPD officer w/ an MP5 machine gun.”
UPSStore6047 tweets:
“Armed person arrested and taken into custody on the corner of 5th & Mass Ave NW”
DDOTDC tweets:
“Update: the 400 and 500 blocks of Massachusetts Ave., NW are now back open to traffic.”