Investigators spent more than a month examining the circumstances surrounding the 13-year-old’s death before announcing the arrest of a 12-year-old boy.
WASHINGTON — Doorbell video, witness accounts and evidence collected from a Northeast Washington home became central pieces of the investigation into the killing of 13-year-old Ahmad Mims before police announced Wednesday that a 12-year-old boy had been arrested.
The juvenile was charged with voluntary manslaughter while armed, police said. His name was not released. The arrest came more than five weeks after Mims was found fatally wounded on a sidewalk in the 1600 block of Rosedale Street NE, ending a period in which detectives had publicly described parts of the boy’s final movements but had announced no arrest.
Mims was killed July 11. Metropolitan Police Department officers responded to the block at about 8:24 p.m. after a report of a person down and found the 13-year-old suffering from a gunshot wound. Emergency medical personnel determined he had died. Investigators later said the shooting itself occurred inside a home on the block.
Video from a doorbell camera captured two young males waiting in the hallway outside Mims’ apartment before his death. The footage showed Mims coming out and looking toward the camera. His grandmother, Monica Mims, said the young people had come to the door and asked him to come outside. Police have not said whether the 12-year-old who was arrested appears in the recording.
The investigation also produced physical evidence inside the Rosedale Street home. A search warrant affidavit said police recovered two firearms and 12 cartridge casings. Authorities have not publicly identified which firearm, if either, was connected to the fatal shot, nor have they disclosed forensic findings tying the newly charged juvenile to a particular weapon.
A witness told detectives that a male dressed in black and described as having a muscular build was seen moving Mims from the house before the child was found outside, according to the affidavit. The document did not specify that person’s age. Police have not said whether that individual has been identified or whether the account relates directly to the 12-year-old now facing a charge.
Detectives also received accounts suggesting the shooting may have followed an earlier conflict. Witnesses said Mims was killed after allegedly hitting the suspected shooter’s sister. Mims’ grandmother separately said her grandson had been involved in a fight at school in the weeks before his death. Authorities have not publicly confirmed a motive or established that the school fight and the fatal shooting were connected.
The information released during the investigation offered pieces of a timeline without providing a complete account of what happened inside the home. Police initially sought a young person seen in the area after the shooting, while investigators continued reviewing witness statements, video and evidence from the scene. Authorities have not disclosed how detectives identified the 12-year-old who was arrested or what new evidence led to the manslaughter charge.
Mims was preparing to enter eighth grade at KIPP Northeast Charter School. His grandmother described him as a sweet child who liked football, video games and playing outside. Her public comments after the killing focused both on the loss of her grandson and on finding out who was responsible for his death.
The arrest answers one major question in the case by identifying a juvenile whom authorities accuse of criminal responsibility, but significant details remain undisclosed. Police have not announced whether another person will be charged, explained the role of the second young person seen in the hallway video or released a full account of the events inside the Rosedale Street home. The case remains under investigation while the 12-year-old faces the manslaughter allegation in the juvenile justice system.
Author note: Last updated August 20, 2026.