A 31-year-old DeKalb man died early Saturday morning of head injuries sustained after being struck by a tractor-trailer Friday night.

DeKalb police said a truck at Midwest Logistics, 3095 Corporate Drive, had finished unloading at a loading dock and began to pull out. A problem with the dock’s locking system caused the trailer to latch onto the dock.

The truck rolled back, pinning Herminio “Antonio” Sangabriel Martinez’s head between the dock wall and trailer door, police said. Witnesses told police they heard a noise and found Martinez, a Midwest employee, had fallen into the trailer after being struck.

The DeKalb Fire Department took Martinez to Kishwaukee Community Hospital, 626 Bethany Road, where he was pronounced dead at 12:30 a.m.

Police said Martinez had just finished unloading a trailer before being pinned, but they did not know why his head was between the dock and trailer door. Police do not expect to file charges against the truck driver.

Midwest Logistics was unavailable for comment as of press time.

The DeKalb police and the DeKalb County Coroner’s Office continue to investigate the accident. An inquest will be held at a later date.