One of the first men charged with abusing children at New Hampshire’s state-run youth detention center has been acquitted of three sexual assault charges, but a jury was unable to reach a unanimous decision on five other counts.

A New Hampshire judge has declared a mistrial in the case of a former staffer at a youth detention center charged with sexually assaulting a teenage girl.

The first criminal trial arising from a five-year investigation into allegations of abuse at New Hampshire’s youth detention center is underway.