TAMPA, Fla. -- William Marshall called for a memorial motorcycle run to honor of his 18-year-old son, who died six months ago in a motorcycle accident.

But the friends and relatives who gathered Tuesday to remember Marshall's son soon found themselves grieving the Hillsborough County father as well.

Marshall died in a motorcycle accident on his way home from that run early Tuesday morning.

A friend who participated in the run said Marshall mentioned a problem with his handlebars before he left for home, but said Marshall still thought he could make it home on his 1998 Harley-Davidson.

Hillsborough County sheriff's deputies said Marshall crashed when he didn't make it around a curve.