A 20-year-old man has been charged with attacking a transgender woman in the District early Monday morning, according to police.

Police have charged Darryl Willard, of Northeast, with assault with intent to kill while armed. He surrendered to police Tuesday morning, according to a press release.

The victim knew her attacker, according to the police statement. After she was shot in the 2300 block of Savannah Street SE around 1:50 a.m., according to police, the woman walked into the Seventh District Police Headquarters to report the crime and was taken to the hospital. She is expected to survive the attack.

The attack was one of several transgender persons reported recently. Two earlier attacks — one of which was fatal— occurred one block and 11 days apart in Northeast Washington.

D.C. transgender groups have become increasingly alarmed, saying they are worried about the police department’s commitment to investigating crimes against them. Police have said they are working closely with the groups and opening up lines of communication.