Updated Friday: Revised to include Shavon Randle's cause of death.

The 13-year-old Lancaster girl who was kidnapped and killed recently because of a drug theft was shot in her head and torso, the Dallas County medical examiner's office confirmed Friday.

Shavon Le'Feye Randle's death was ruled a homicide, as was that of Michael Titus, whose body was found with hers in an abandoned and boarded-up home in east Oak Cliff.

Shavon, who had been reported missing last Wednesday, was discovered dead early Sunday at a home in the 2200 block of East Kiest Boulevard near East Illinois Avenue.

Titus, a 19-year-old who had been named a person of interest in the girl's disappearance, was found dead with a pistol in his right hand, according to a search warrant affidavit.

He was shot in the back of his head, and his death also was ruled a homicide, according to the Dallas County medical examiner's office.

Six people have been arrested, but no one has been charged in the deaths.

Drugs were purchased in the past from the house where Shavon was kidnapped, according to police documents.

A search warrant affidavit obtained by WFAA-TV (Channel 8) details what the girl's aunt found when she returned home June 28 after learning Shavon had been taken.

It also mentions a person who told law enforcement about buying marijuana from the home in the 1300 block of Southridge Drive.

Rosenia Randle's daughter, Ledoris Randle, told her she had received several calls from an unknown man who said he had Shavon and to let her mother know.

When Rosenia Randle returned home, she saw that the deadbolt had been unlocked. She searched the home and saw the couch had been moved and drawers had been opened, but she did not find her niece, the affidavit stated.

Her other daughter, who has a disability, was not able to say what she saw, but indicated that someone had been at the home, according to the documents. Rosenia Randle said she knew Shavon, who had been staying at the house for nearly two years, would not leave the disabled girl alone.

The affidavit stated that the kidnapping was done "in retaliation" for a June 26 drug robbery.

Ledoris Randle's boyfriend, Kendall Perkins, admitted to police that he and three other men went to a Lancaster motel and took about 22 pounds of marijuana that belonged to Devontae Owens and Darius Fields, according to police documents.

Fields is in federal custody. Perkins, Owens, Owens' bodyguard Laquon Wilkerson and Desmond Jones, who led officials to the house where the bodies were found, are being held in the Dallas County Jail. Laporshya Polley, who was at the motel when the drugs were stolen, is at the Irving City Jail.

Breaking news reporter Claire Ballor contributed to this report.