Update: Driver Suffered Heart Attack Before Fatal Crash

Update: Friday, 6 p.m. -- A driver suffered a heart attack causing him to run a stop sign and cause a three-vehicle accident that killed him and another driver, according to this report by WIS.

The accident happened Wednesday around 2 p.m. at the intersection of U.S. Highway 378 and Shore Road near Lake Murray.

"The Highway Patrol said the 87-year-old driver of a 2009 Ford Focus, identified by the Lexington County Coroner's office as Mieczyslaw Michae Butzich, failed to stop at the stop sign on Shore Road at 378 and crashed into a pickup truck. The collision forced the pickup into the eastbound lanes of 378 where it was hit by a Ford Mustang.

The crash killed Butzich, of Gilbert, as well as the driver of the pickup truck, 62-year-old Edward William Hartung, Jr. of Leesville.

Original story: The names of two men who died Wednesday after a three-vehicle wreck on US 378 in Lexington County have been released.

Lexington County Coroner Harry O. Harman identified the two victims involved in the collision at US 378 and Shore Road near Gilbert as Edward William Hartung, Jr., 62, of Leesville, and Mieczyslaw Michae Butzich, 87, of Gilbert.

The collision happened shortly after 2 p.m. Wednesday when the driver, now identified as Butzich, drove his Ford Focus through a stop sign located on Shore Road at US 378 and hit a Cheverolet pickup, according to the South Carolina Highway Patrol.

Hartung, who was the driver of the pickup, was traveling west on US 378 when he was struck, forcing the vehicle to travel into the eastbound lanes. 

The vehicle was then struck by a Ford Mustang, which was driven by a 35-year-old woman from Columbia, Lance Cpl. Brent Kelly said. 

Her condition is not known and her name has not been released.

Hartung and Butzich were taken to Palmetto Health Richland and Lexington Medical Center, respectively, where the men were pronounced dead from injuries received in the collision, Kelly said.

The woman was transported to Lexington Medical Center. 

Results of the two autopsies performed on Thursday are still pending, according to the Coroner's Office. 

The accident remains under investigation by the Lexington County Coroner’s Office and the South Carolina Highway Patrol.