Police are investigating after thieves stole four cars from a southern Illinois dealership and led officers on a high-speed chase.

Police said Wednesday two Dodge Challengers, a Ford Mustang and a Ford Focus were taken from a Nashville dealership Tuesday. They say the thieves fled west on Interstate 64 toward St. Louis.

Authorities from at least seven agencies followed in a chase that they say reached "very high" speeds. They say one suspect was captured in O'Fallon after he pulled over in a Challenger and tried to flee on foot. An Illinois State Police spokesman says police dogs helped locate the man hiding in another car dealership lot.

He says another suspect pulled over near New Baden and fled on foot. He says at least one other suspect got away.