FRISCO -- Police are investigating after a motorcyclist was killed in a crash in Frisco.

Just before 4:45 p.m. Friday, Jeffrey Cosby, 27, was riding his motorcycle south on State Highway 121, near Lebanon Road, when he crashed with a vehicle.

Cosby was taken to Baylor Scott and White Medical Center – Centennial, where he was pronounced dead from his injuries.

No one else was injured.

The cause of the crash is under investigation, and police say Cosby was wearing his helmet when it occurred.

If you have helpful information, you're asked to call Frisco PD at (972) 292-6010.