As many as 30 people were shot during a block party in Baltimore early Sunday.
Acting Commissioner Rich Worley told WBAL two are dead and three others were critically injured.
He said multiple calls started coming in just after 12:30 a.m. for a shooting in the Brooklyn neighborhood. Residents reported there were numerous victims.
Worley said officers found a woman dead at the scene. Nine others were taken to hospitals, and as many as 20 others arrived at hospitals across the region on their own.
The investigation is continuing.