Medical findings undermine Demetrius Beatty’s account that another child caused the injuries that killed Khamyah Honesty, according to prosecutors.
WASHINGTON, DC — The murder case against Demetrius Beatty turns in part on a stark dispute over who inflicted the injuries that killed 2-month-old Khamyah Honesty: prosecutors accuse Beatty, while his defense has pointed to a 6-year-old child who was also in the home.
Beatty, 40, faces first-degree felony murder and first-degree cruelty to children after the infant twin died following an Aug. 16 emergency call at a Southeast Washington apartment. Prosecutors say Beatty was responsible for the fatal violence and later tried to attribute Khamyah’s injuries to his nonverbal autistic son. The defense has challenged that theory and cited Beatty’s call for emergency help as evidence against the government’s accusation. No trial has resolved those competing claims.
Authorities agree on several basic facts that frame the dispute. Beatty was caring for five minor children at the residence, including the 2-month-old twins, when police were summoned to the 800 block of New Jersey Avenue Southeast at about 9:47 p.m. Officers found Khamyah unconscious and unresponsive with blunt-force injuries. Emergency personnel transported her to a hospital, where she died. The D.C. medical examiner later ruled that blunt-force trauma caused her death and classified it as a homicide.
The disagreement begins with what happened before officers arrived. Court-record reporting says Beatty told a 911 operator that he believed his 6-year-old son had attacked the infant. The call placed another child at the center of his initial explanation and became significant after prosecutors obtained medical findings about the extent of Khamyah’s injuries. A forensic pathologist concluded that the injuries could not have been caused by the 6-year-old in the manner described, according to reports based on the court records.
Beatty’s lawyer took the opposite view during an early court proceeding, according to those reports. The attorney argued that Beatty’s behavior after finding Khamyah injured — including summoning emergency assistance — did not fit the prosecution’s portrayal of him as the attacker. The defense attributed the fatal injuries to the older child. That position remains an advocacy claim rather than an established finding, just as the prosecution’s allegation that Beatty killed Khamyah remains unproved unless established beyond a reasonable doubt in court.
The government’s case also relies on alleged inconsistencies in Beatty’s descriptions of the evening. The twins’ mother told investigators that Beatty first said he had briefly gone into the hallway for a phone call before returning to find Khamyah bleeding. Another account involved the 6-year-old moving or throwing the baby. A third version reportedly included Beatty playing ball with other children before stepping outside the apartment area and returning to find the infant injured. Prosecutors argue that the differences matter when considered with the medical evidence.
The mother’s account introduces another part of the prosecution theory: a deteriorating relationship linked to the twins’ biological father. Beatty and the woman had other children together, and he continued living with the family after their romantic relationship ended, according to published accounts of the court documents. Prosecutors say Beatty was upset after learning the newborn twins had been fathered by another man, who was incarcerated. The government has characterized that conflict as relevant to motive, although motive allegations remain for prosecutors to prove.
The records also describe an alleged statement made before the homicide that prosecutors consider significant. The mother said Beatty threatened that the twins would be dead if she left to visit their biological father. Her account later took on added importance after Khamyah was fatally injured while Beatty was caring for the children. A threat described by a witness can be part of a prosecution case, but it does not by itself establish who committed a later act, and Beatty retains the right to contest the allegation.
Other events are likely to shape how both sides portray the environment surrounding Khamyah before her death. About 16 days earlier, she had gone down a Metro escalator in an incident involving her car seat, according to court-record reporting. Beatty reportedly described what happened as an accident. Medical workers who treated the infant raised questions about that version, the reports say. Prosecutors have cited the earlier event as part of a broader pattern of concern, while the available official releases do not state that Beatty was charged separately over that episode.
The court-record reporting also describes an occasion when the twins were placed in a closet while their mother was away visiting their biological father. The mother said Beatty put them there. A relative of the twins’ father reportedly gave investigators a stronger account, saying the infants had been locked inside. When questioned, Beatty allegedly made a disparaging remark about the babies’ condition. The relative had contacted D.C.’s Child and Family Services Agency multiple times before Khamyah’s death, according to the records.
Those earlier concerns may provide background for investigators, but the central criminal charges concern the events surrounding Khamyah’s fatal injuries. Police said detectives quickly determined that the homicide had “domestic overtones.” The Special Victims Unit of the Metropolitan Police Department’s Homicide Branch worked the case with the U.S. Attorney’s Office. On Sept. 16, roughly one month after Khamyah died, a regional fugitive task force arrested Beatty on a D.C. Superior Court warrant.
The next day, Beatty appeared before Superior Court Judge Dorsey Jones. According to the Justice Department, Jones found probable cause that Beatty committed the charged offenses and ordered him held without bond pending a preliminary hearing. Probable cause is a preliminary legal standard permitting a prosecution to move forward; it is substantially different from the proof beyond a reasonable doubt required for a conviction.
The felony-murder charge also does not eliminate the government’s obligation to prove the facts underlying it. The U.S. Attorney’s Office emphasized in announcing the case that charges in a criminal complaint are allegations and that every defendant is presumed innocent unless proved guilty. That presumption is particularly important where, as here, the defense has already offered a competing account of how the fatal injuries occurred.
Beyond the homicide itself, reports based on court records have described concerns about other children and conditions inside the residence. The surviving twin reportedly had a severe diaper rash, another young child had a healing burn, and authorities removed the surviving children from the home. Those circumstances may become part of the broader factual record, though the available public charging announcement identifies Beatty’s filed counts as first-degree felony murder and first-degree cruelty to children in connection with Khamyah’s death.
There remains a contest between evidence, witness accounts and competing explanations rather than a final determination of responsibility. Police have said the investigation remains coordinated with the U.S. Attorney’s Office, and the latest official materials reviewed for this article do not announce a verdict or other final disposition. Beatty remains entitled to the presumption of innocence as the prosecution proceeds.
Author note: Last updated November 7, 2026.