Police charged two people with first-degree murder in the shooting deaths of two women and two children in a trash-filled apartment in the Washington area.
The two charged were identified as 43-year-old Darrell Lynn Bellard and 18-year-old Tkeisha Nicole Gilmer, both from Texas. It was unclear Saturday whether either had an attorney.
Prince George's Police Chief Roberto Hylton told the Washington Post on Saturday that one suspect had "executed" the victims while the other blocked their escape.
"We believe that this was a drug relationship that went very bad," Hylton told the Washington Post. "Just the coldness of this execution, it's very troubling."
Identity of the victims: 38-year-old Dawn Yvette Brooks; her two children, Shayla Shante Sikyala, 3, and 4-year-old Shakur Sylvester Sikyala; and the children's aunt, Mwasiti Sikyala, 41. They were from Lanham, Md.
The apartment was described as filthy and squalid. The home had no running water or functioning toilets, police said. It was filled with heaps of trash and containers of feces.
On Friday, health department officials, wearing masks and gloves, combed the grounds outside the house. Health officials inspected the inside of the apartment to make sure it was safe for police to investigate the crime scene, according to a Washington Post blog.
The Associated Press contributed to this report.