From MPD:

“Alert: Stabbing Investigation 3800 block Georgia Avenue NW. Lookout for: B/M dreadlocks and wearing all black. DO NOT TAKE ACTION CALL 911″

A reader reports at 8:35pm:

“a guy was unconscious , laying in the safeway entrance, head wrapped, bloodied”

Another reader reported:

“Heard screams, saw people running, & run into a poor kid who has been stabbed multiple times in the head & is begging for help. Stayed w/ lots of others until police came.”

Updates when more is known.