TAMPA, Fla. — A Port Tampa Bay construction worker was killed Friday morning in a workplace accident.

According to the Hillsborough County Sheriff’s Office, deputies responded to the Port’s Terminal 6 just before 6:45 a.m. to an area where workers were replacing a seawall.

Authorities said that as workers were moving a concrete slab, a portion estimated to weigh 3,000 pounds broke off, fell, and landed on a 27-year-old man.

He was pronounced dead a short time later at an area hospital. His identity has not been released.

The Occupational Safety and Health Administration (OSHA) is investigating.