Updated: September 22, 2012 6:21AM
LIBERTYVILLE — A 53-year-old Deerfield man who was an experienced runner died Sunday after suffering a heart attack while running on a forest preserve trail.
Lee Lyall of the 1500 block of Crab Tree Court, was found Sunday morning on a forest preserve trail near Independence Grove Forest Preserve near Libertyville. The case is being handled by Lake County Forest Preserve Ranger Police.
Lyall was pronounced dead at 9:40 a.m., Lake County Coroner Artis Yancey said Monday.
“He was an avid runner, he ran marathons,” said Yancey, including the Chicago Marathon.
Lyall’s vehicle was found at Independence Grove, near routes 21 and 137, a few miles away from Advocate Condell Medical Center, where he was pronounced dead.
Deputy Coroner Michael Donnenwirth said Lyall was just about to go under the bridge at the Des Plaines River and Route 137 on the Des Plaines River Trail when he was stricken.
“Witnesses said he was kneeling and looked like he was looking at something,” Donnenwirth said, then Lyall collapsed. A witness began CPR and called police and the conservation police were there in a short time because of a bicycle event at the forest preserve. Libertyville paramedics were there a short time later.
An autopsy Monday showed Lyall had “a cardiac event,” said Yancey.