ENID, Oklahoma -- U.S. Marshals arrested an Oklahoma mother for the murder of her 15-year-old daughter.
According to the medical examiner's office, Linda Tucker was injected with almost 10 times the lethal limit of meth.
The Cushing teen died in June following a family reunion in Stillwater at Lake Carl Blackwell.
According to an autopsy report, Tucker had four needle puncture marks on the left side of her neck. The M.E. ruled her death as a homicide.
Monday night, U.S. marshals arrested Tucker's mother, 33-year-old Doris Rigsby, and her boyfriend, 30-year-old Jeffrey Alan Phillips after the two were tracked down in Enid.
Deputy U.S. Marshal John Thomas said Heather Gaddis was arrested on a murder warrant Tuesday afternoon at a Tulsa motel.
All three now face murder charges.
The Associated Press contributed to this story.
More Autopsy Report: Teen's Fatal Meth Overdose Ruled Homicide