HAPPY VALLEY, Ore. – A 71-year-old construction crew worker was hit and killed by a dump truck that was experiencing mechanical issues Friday afternoon in Happy Valley.

The Clackamas County Sheriff's Office said no outside vehicles were involved and the crash "occurred as a result of a construction related accident."

The flagger, identified as Martin P. Lavell of Sandy, was part of a construction crew assisting Northwest Natural Gas, which was fixing a gas leak near Southeast 132nd Avenue and Rose Meadow Drive.

The driver of the dump truck that had mechanical issues stayed at the scene and was heartbroken over the accident, the sheriff's office said. The collision occurred shortly after 4 p.m.

Life Flight was initially called but the worker died at the scene.

Roads in the area of the gas leak will be closed as crews work to finish repairs.