This photo shows a Kittery Community Center bus that was involved in an accident on Interstate 95, Friday, Aug. 10, 2018 in Greenland, N.H. Authorities say children were injured when their school bus veered off an interstate and crashed into trees in New Hampshire. [Deb Cram/Portsmouth Herald via AP)
This photo shows a Kittery Community Center bus that was involved in an accident on Interstate 95, Friday, Aug. 10, 2018 in Greenland, N.H. Authorities say children were injured when their school bus veered off an interstate and crashed into trees in New Hampshire. [Deb Cram/Portsmouth Herald via AP)

A Kittery Community Center bus carrying 11 children and two staff members was involved in a single-vehicle accident on Interstate 95 Friday morning in Greenland, with emergency crews from multiple towns responding to the crash.

Kittery Town Manager Kendra Amaral said all injuries caused by the crash were non-life threatening.

The crash was reported in Greenland on the southbound side of the interstate highway at 9:20 a.m., and police and firefighters were called from around the area to assist. State police took command of the scene, where Portsmouth, Exeter and Greenland responders assisted. Traffic was backed up on the interstate to the Maine state line.

State police Lt. John Hennessey said it appeared the vehicle left the roadway because the 21-year-old male driver suffered a possible medical event. The driver, an 18-year-old camp counselor and a 10-year-old child were all transported to Portsmouth Regional Hospital with injuries initially reported as “serious,” but Hennessey said “that is changing as we speak,” indicating the injuries were non-life threatening. The remaining children and one counselor were transported to Exeter Hospital for either unknown injuries or precautionary measures, he said.

From Exeter Hospital, one child was eventually transported to a Boston hospital with a “serious injury.”

Portsmouth Fire Lt. Brian Ryll said firefighters from his department transported seven of the patients. Initially, he said one of the injured was an adult with “severe” injuries, three patients had moderate injuries and the rest were considered minor.

Amaral said the accident involved the Kittery Community Center’s SAFE program van, which was headed to a day trip at Candia Springs Adventure Park. She said the town was contacting parents of all children involved in the accident.

She noted the van was following another bus that was carrying the rest of the program’s children; that bus made it safely to Candia.