A man charged with killing a 79-year-old inside a Capitol Hill rowhouse on Easter Sunday had been told to move out weeks earlier after relatives said he threatened to “kill everyone,” according to a court document filed Tuesday.

Malcolm Amir Cunningham, 21, of Northeast, was arrested Monday and charged with second-degree murder while armed. He made his initial appearance in D.C. Superior Court on Tuesday.

Police have identified the slain man as David Norwood, who lived in the two-story house in the 600 block of C Street NE, near Stanton Park. Authorities did not disclose the relationship between Norwood and Cunningham. According to court papers, several people lived in the house.

The discovery of the body came through an anonymous tip. Police said officers had earlier received a text from somebody who reported seeing a man put a knife inside a recycling bin in an alley near the house on C Street. Police said they found a black and silver Sharper Image knife in a bin. The tip was bent and blood appeared to be on the blade, according to the affidavit.

An investigation led to the house and the body in the living room, police said. Norwood was pronounced dead at the scene.

Interviews by police with the suspect’s relatives revealed that Cunningham had been angry with Norwood over family issues and had repeatedly threatened to kill him and others, the arrest affidavit says. One time, the court document states, the argument involved a knife.

Family members of Norwood and Cunningham could not be reached for comment.

Police said relatives told them that Cunningham had moved out of the house two weeks ago but apparently returned Sunday, the court documents state.

One witness told police Norwood confronted Cunningham: “I saw you trying to break in the back door,” he told the suspect, according to the affidavit. The suspect reportedly responded: “I want my clothes.”