PLEASANTON — A motorcyclist died after being pinned under a truck following a crash Friday afternoon on westbound Interstate 580 at Hacienda Drive, police said.

The motorcyclist’s identity was not released.

California Highway Patrol Officer James Evans said no other injuries were reported in the crash shortly before 1 p.m.

Evans said the motorcyclist was trapped under a truck following the collision.

Reach Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.