Published: Mar 17, 2014 12:13 PM EDT

HIGHLANDS COUNTY, Fla.- Mary Yanka, 49, of Lehigh Acres, was killed in a crash in Highlands County on Sunday morning. She was the passenger of Stephen Yanka, also 49, who is listed in critical condition at Lee Memorial Hospital. According to the Florida Highway Patrol, both were wearing helmets while riding a motorcycle on U.S. 27.

A Ford van failed to yield the motorcycle's right of way and crashed into the bike, near Josephine Ave. The driver and passenger were thrown from the motorcycle. None of the occupants of the van were injured.

The driver of the van, 80-year-old Harold Holthaus, was cited for failing to yield the right of way.

Alcohol is not considered a factor in the crash.