Lifestar was called to One Research Parkway in Meriden after a wall collapsed.
A retaining wall fell on a construction worker around 3 p.m. at a worksite that is the future home of a car wash.
Concrete from the wall pinned the man against a dump truck, according to fire officials. Coworkers freed the man, but he went into cardiac arrest, fire officials said.
Lifestar helicopter transported the man to the hospital. His name and condition have not been released.
Meriden fire officials and the Occupational Safety and Health Administration are investigating the accident.
Photo Credit: NBCConnecticut.com
