WARREN, OH — Two teens who escaped a crash that killed six friends in a swampy pond wriggled out of the wreckage by smashing a rear window and swimming away from the SUV, a state trooper said Monday.

The inside of the sport utility vehicle was entirely under water within minutes of the crash, said State Highway Patrol Lt. Brian Holt.

Investigators don’t yet know why the eight were in the speeding vehicle without permission when it smashed into a guardrail and flipped over into the pond Sunday morning around daybreak, Holt said.

No one in the group had asked to take the vehicle and its owner was not related to any of the teens, Holt said. The vehicle was licensed to a resident of Youngstown, about 20 miles away.

The two teens who escaped have talked with investigators, Holt said. The two boys ran a quarter-mile to a home to call 911, the highway patrol said.

The two survivors, 18-year-old Brian Henry and 15-year-old Asher Lewis, both of Warren, were treated for bruising and other injuries and released, she said.

All those killed were ages 14 to 19, authorities said. State police identified the others as the 19-year-old driver Alexis Cayson; Andrique Bennett, 14; Brandon Murray, 14; and Kirklan Behner, Ramone White and Derrick Ray, all 15.

Pictured: Leaman Joe, left, hugs Michael Parker, at the crash site that killed their friends on Park Ave. in Warren, Ohio on Sunday, March 10, 2013.