BROKEN ARROW, Oklahoma - A second woman has been charged with murder in a notorious Green Country cold case. Dayna Marie Hargrove Miller faces charges in the death of Jarret Clark.

The Broken Arrow teenager was found dead in 2006 at Fort Gibson Lake, just days after his high school graduation.

The case stayed cold for years, until earlier this year when Courtney Manzer was arrested and charged with murder. Investigators say Manzer was among the last to see Clark alive.

Reports say Miller was arrested on complaints of conspiracy and first degree murder.

Clark went missing in May of 2006 after he and others went camping at Fort Gibson Lake near the Wahoo Bay area. Four days after a missing person's report was filed, Clark's body was found on May 18; the medical examiner said the death was caused by drowning.

During an investigation, an affidavit says, it was discovered that Clark had received several blows to the back of the head before he had drowned in the lake. Later in the investigation Anthony Scott Wallen admitted to the beating.

Reports say investigators were able to discover that, after Clark was unconscious, Miller placed her car in a "lookout position" while others drug Clark, placed him in a pickup truck and then put him into the lake where he drowned.

According to reports, during the investigation Miller lied to investigators about Clark being intoxicated and about who was at the campsite. The report says after investigators questioned her story, she admitted who was there the night of the murder.