30 kids sent to hospital after Idaho school bus crash: Police

A school bus carrying 30 YMCA summer camp kids crashed on Friday on an Idaho highway, according to police.

All 30 kids were taken to local hospitals "in an abundance of caution," according to Idaho State Police; 11 were injured and seven deemed critical.

The kids' ages ranged from 13 to 18 years old, according to police.

The incident occurred on State Highway 55 near milepost 84 in Boise County at around 3 p.m. local time, authorities said. The school bus rolled over in the crash, police said.

This was one of four buses for the summer camp program; according to police the other three were not involved with the crash.

Idaho State Police said they are investigating the crash and it's currently unknown what caused it.

Multiple agencies responded to assist with the crash. Rescue apparatus was on scene, according to the Valley County Sheriff's Office. A stretch of the highway was temporarily closed in both directions in the wake of the crash.

The YMCA summer camp program was through the Treasure Valley YMCA, state police said.

"The Treasure Valley Family YMCA would like to thank the many individuals in our community for reacting quickly with heroic support of our campers and staff involved in the accident yesterday on Hwy 55," the Boise-based organization said in a statement on social media on Saturday. "We're grateful for your continued thoughts and prayers as we work to support those involved."

ABC News' Vanessa Navarette contributed to this report.

This is a developing story. Please check back for updates.