Police said John Leonard Duerr III, 32, was found with a self-inflicted injury to his neck after the pursuit and remained in critical condition at Shock Trauma as of 5 a.m. Tuesday.
Duerr, driving a black Chevrolet Silverado, was first pursued by the Westminster Police Department after a traffic violation before troopers from the Westminster Barrack joined the pursuit in the area of Route 140 and Sandymount Road shortly before 11 p.m., according to police.
The pursuit continued on Old Westminster Pike, Malcolm Drive, and returned to Route 140 before the pickup stopped in front of Ben's Rental in the area of Route 140 and Market Street, police said.
Upon contacting the driver, officers found him with an apparent injury to his neck and immediately began to provide medical attention and requested emergency medical services, according to the release.
Both directions of Route 140 were closed between Market Street and Malcolm Drive for about two hours for the investigation, according to police.
State Police were assisted by the Westminster City Police Department, Carroll County Sheriff's Office, and the Westminster Fire Department.