The Fort Peck Assiniboine and Sioux Tribes of Montana continue to investigate the death of a 17-year-old high school student but family and friends say there are too many unanswered questions about the case.

Desmond Clark was last seen on April 10 at a party, where he may have been involved an altercation. His family wants to know why other teens didn't talk to authorities until two days later.

"What really hurts me is that no one went to look for him and no one called to check up on him," Ruby Clark, Desmond's grandmother, told The Great Falls Tribune. "There are a lot of questions out there, and I won't rest until I have the answers."

Desmond's body was found on April 13, about a half-mile from the party site. Authorities say he drowned and ruled his death an accident.

"The case is still open and we're following up information. There were 15 to 20 kids at that party and we're still interviewing some of them," said Jose Figueroa, the tribe's public safety director.

Get the Story:
Family frustrated with investigation of Wolf Point teen's death (The Great Falls Tribune 4/24)

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Fort Peck teen's death ruled an accidental drowning (4/15)