A shuttle bus taking children to the private Field School school collided with two vehicles Monday morning in Northwest Washington, sending three children and two adults to area hospitals, according to D.C. police and fire reports.

Battalion Chief Brian Lee said one child was found outside the bus, but it wasn’t clear if the youth had been ejected from the vehicle or had climbed out a shattered window. Police said the other two vehicles involved were a Jeep Cherokee and a Suzuki sedan

Authorities described the injuries as moderate to serious, but none were deemed life threatening. All of the students taken to hospitals were released Monday, according to a school statement.

Will Layman, the director of institutional advancement at the Field School, said the bus, operated by Reston Limousines, had picked students up from the Friendship Heights Metro station and was en route to the school, about two miles away on Foxhall Road NW.

Layman said in a statement there were 18 students aboard the 40-seat bus — mostly middle school students, though some were from the upper school and were taking an early shuttle. Their classes start later than for the young students. The institution has about 320 students in grades 6 through 12.

The accident occurred about 7:40 a.m. in the 4100 block of Nebraska Ave. NW, in front of the National Presbyterian Church and a few blocks from the Tenleytown Metro Station on Wisconsin Avenue.

Lee said three students, the bus driver and the driver of one of the other cars involved in the collision were taken by ambulance to area hospitals.

In addition, Lee said a Fire Department bus took the remaining children to two hospitals for precautionary checkups.

The cause of the accident is under investigation.

This item has been updated.