A shipyard worker on loan to Pearl Harbor from Portsmouth Naval Shipyard died from injuries suffered when he fell from an electric cart.

Andrew McPherson was temporarily assigned to Pearl Harbor Naval Shipyard. The 25-year-old apprentice electrician died Monday, eight days after suffering serious head injuries in the Dec. 12 incident.

The Pearl Harbor shipyard said in a statement Tuesday that the Navy is investigating the incident.

McPherson was an employee of the Portsmouth Naval Shipyard in Kittery, Maine.