One person died and three were injured Tuesday after a Gallatin County ambulance collided with an SUV whose driver is suspected of being under the influence of drugs.

The ambulance, which was carrying two emergency medical technicians and a patient, was driving on U.S. 127 North at 10 a.m. when a northbound SUV crossed the center line and hit it head-on, state police said.

The ambulance flipped and landed on its roof in the road. The ambulance's patient, John Little, 59, of Dry Ridge, was taken by ambulance to University Hospital at the University of Cincinnati, where he died from his injuries, state police said.

The EMTs and the driver of the SUV were all taken to University Hospital as well.

The driver of the SUV, Hunter LeGrand, 22, of Warsaw, was not wearing a seat belt. After being extricated from the vehicle, he was taken by helicopter to University Hospital, where he was listed in serious condition Tuesday night.

State police said charges are pending against LeGrand, who is suspected of driving under the influence of drugs.

David Waltz, 25, of Carrollton, the EMT in the back of the ambulance, was taken by helicopter to the hospital, and Justin Shields, 21, of Ghent, the ambulance driver, was taken by Gallatin County EMS. No information on their conditions was available Tuesday night.

Karla Ward: (859) 231-3314. Twitter: @HLpublicsafety