A motorcyclist was killed in a crash Wednesday morning in Seattle’s Georgetown neighborhood, according to the Seattle Fire Department.

The crash was near the intersection of First Avenue South and South Lucile Street, not far from East Marginal Way South. The collision was reported to 911 shortly after 10 a.m., and Fire Department crews arrived on scene to find the motorcyclist dead, spokesperson Hilton Almond said. No one else was treated.

The crash involved the motorcyclist and a dump truck, according to the Seattle Police Department.

The driver of the dump truck initially drove away before being found by Seattle police. The driver was cooperating with investigators and wasn’t arrested. A drug recognition expert found no signs of impairment.

Seattle police investigators were still working Wednesday evening to determine what caused the collision.