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FILE - Police are investigating an accident involving a motor home on I-15 that killed a pedestrian late Tuesday.

BOUNTIFUL — Police are investigating an accident involving a motor home on I-15 that killed a pedestrian late Tuesday.

Officers responded about 10 p.m. to a southbound lane at 500 South in Bountiful, said Utah Highway Patrol Sgt. Todd Royce. The UHP is investigating the death as a suicide. No other vehicles were involved.

The crash was expected to block three lanes of traffic for about two hours, the UHP said. Authorities did not immediately release names of those involved or say whether the driver of the motor home was injured.

The national suicide crisis hotline is 800-784-2433.

— Annie Knox