Police arrested a 16-year-old girl and her boyfriend on first-degree murder complaints after the body of the girl's mother was found Friday.
The body's discovery also ended a monthlong missing person case.
Oklahoma City police accuse Jordan Kemp, 16, and her boyfriend, Jason Bales, 23, of killing Stepheny Glass, 36. Kemp had told police her mother was last seen June 11, Sgt. Paco Balderrama said.
But the investigation took a turn Friday afternoon when police found Glass' body in a shallow grave near the 1500 block of S Western Avenue, Balderrama said.
"Oklahoma City homicide detectives made contact and gathered sufficient information to make a probable cause arrest in the murder of Stepheny Glass," he said.
Shortly after Glass was reported missing, police sent a missing person report to the media asking for the public's help to find her.
But a close friend of Glass, Tama Kittel, said she called police detectives because something didn't make sense.
"Jordan began telling me that her mother loved her boyfriend," Kittel said.
Being a close friend, Kittel said she knew better. Kemp and Bales wanted to marry, but Glass would have nothing of it, Kittel said.
"Jason wasn't allowed to hang out with Jordan," she said.
Police did not say how Glass was killed. No other details about the case were available.
Kemp and Bales are being held in the Oklahoma County jail in lieu of bail.