Police investigate a double fatal vehicle crash at Route 47 and Route 14 in Woodstock Wednesday morning. | Photo: Alex Vucha / WFRD.

Police said a high-speed crash that left two men dead and a third man critically injured in Woodstock on Wednesday was possibly caused by a driver having a medical emergency.

The Woodstock Fire and Rescue District and the Woodstock Police Department responded around 6:33 a.m. Wednesday to the intersection of Route 14 and Route 47.

Woodstock Deputy Police Chief Jeffrey Parsons said officers located two vehicles, a red 2002 Ford Fusion and a gray 2006 Mazda Protege, with heavy damage.

A preliminary investigation, which included evidence gathered at the scene and witness statements, showed that the Mazda Protégé was facing eastbound on Route 14 and stopped while waiting to turn right to go southbound on Route 47.

The Ford Fusion, which was also traveling eastbound on Route 14, was traveling at a very high rate of speed when it collided directly into the rear of the Mazda, Parsons said.

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The impact caused both vehicles to travel across four lanes of traffic before coming to rest in the grassy area of the southeast corner of the intersection.

A 34-year-old man, who was driving the Mazda, and a 47-year-old man, who was in the passenger seat, were both pronounced dead at the scene. They were both from Harvard.

Paramedics treated a 42-year-old Harvard man who was driving the Ford and transported him to Northwestern Medicine Hospital in Huntley with life-threatening injuries.

The Major Crash Assistance Team (MCAT), which consists of members from the Cary, Harvard, Johnsburg, McHenry, Spring Grove and Woodstock police departments, was activated to assist with the crash investigation.

The McHenry County Sheriff’s Office also assisted with the investigation.

“At this time, drugs and/or alcohol are not believed to be a contributory factor in this crash and investigators are looking into the possibility of the driver of the Ford having a medical emergency while operating his vehicle,” Parsons said.

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The names of the three victims involved are being withheld pending family notification and the conclusion of the investigation, Parsons added.

Anyone who witnessed the crash or knows someone that may have is asked to contact the Woodstock Police Department at 815-338-2131.