Published: Jul 15, 2014 3:39 PM EDT
Updated: Jul 15, 2014 3:45 PM EDT

FORT MYERS BEACH, Fla.- Authorities have released brand new details about a group of bicyclists who were hit by a car over the weekend.

Ten riders were on San Carlos Boulevard on Fort Myers Beach Saturday morning when they were hit. At least one remains in critical condition.

Investigators say a driver hit one biker, then swerved away, then drove back toward the bikers, hitting another one.

The driver was treated for a neurological issue and may have had a medical event during the crash.