Dioni Javiera Araya Arriagada, 30, veered into oncoming traffic and drove into a large pickup truck, sheriff’s initial investigation shows.

Joan Bellows, 61, was transported to Maine Medical Center for treatment of multiple broken bones and abrasions.

David Mains, 48, died after his motorcycle collided with a car on Interstate 495 in Massachusetts.

Teachers and staff followed procedures during the roughly hourlong incident, while deputies responded and combed through the building room by room.