An Androscoggin County grand jury is expected to decide by July 8 whether criminal charges should be brought in relation to the October hayride accident that killed Cassidy Charette, of Oakland.

Androscoggin District Attorney Andrew Robinson said the jury will reconvene for a third session July 7 and wrap up the following day.

The jury is weighing the possibility of criminal charges stemming from the death of Charette, 17, a student at Messalonskee High School in Oakland. She was killed and 20 others were injured, including her boyfriend Connor Garland, 16, of Belgrade, during a “haunted” hayride called the Guantlet at Harvest Hills in Mechanic Falls.

Authorities have said a mechanical problem apparently caused the Jeep towing a wagon full of passengers to crash down a hill in the woods and slam into a tree.

The grand jury first met on the case in May and held a second session in June.

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