The parents of a Broken Arrow teen found drowned just more than two years ago in Fort Gibson Lake said the grand jury for which they petitioned recently in Wagoner County will be impaneled.

Questions about the grand jury investigation arose this past week after one man identified as a person of interest in the investigation of the Jarret Clark’s death was killed in a single-car collision. The wreck, which occurred late Thursday near Coweta, left two others dead and a fourth person injured.

Clark’s mother said the death last week of Brandon Hargrove did nothing to change the family’s plan to pursue the answers they have to the numerous questions that surround the death of her son.

“After visiting with our attorney who filed our grand jury petition, nothing there has or will change,” Tammy Slater said. “We still have three people alive who are involved in Jarret’s death.”

Clark’s death was ruled a drowning. Clark was last seen alive May 14, 2006, while celebrating his recent graduation from Broken Arrow High School in the Wahoo Bay area of Fort Gibson Lake. The manner in which Clark drowned remains a mystery.

Slater said Monday she has mixed reactions about Hargrove’s death and how that might affect the upcoming investigation by a Wagoner County grand jury, which is scheduled to be impaneled Dec. 1.

“I am really curious as to how this will all play out,” Slater said, noting that Hargrove was one of the central figures in the original investigation of her son’s disappearance and death. “During our signature petition process we had people who approached us with new information. There will be new people coming forward during the grand jury process.”

The wreck that claimed Hargrove’s life also killed Matthew Ennes, 25, of Coweta and 19-year-old Coweta resident Brandon Scott Looper, who was driving the car that crashed into a Wagoner County creek about a mile north of Coweta.

Randy Saffell, a spokesman for the Oklahoma Medical Examiner’s Office in Tulsa, said all three men killed in the collision died as a result of blunt force trauma and water immersion. The deaths, Saffell said, were ruled accidental.

Sarah Morrow, 21, of Mannford was the only occupant of the car to survive the collision. She reportedly told investigators Looper was driving too fast and may have been drinking before losing control of the car he was driving while trying to negotiate a curve.

Morrow was listed Monday in good condition at St. Francis Hospital in Tulsa, where she was being treated for head, arm and leg injuries.

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