A container terminal located in Boston Harbor was closed on Wednesday after a truck driver was fatally struck by a truck.

The incident occurred around 11:40 a.m. on June 15 at the Conley Container Terminal.

Massachusetts State Police have confirmed that the truck driver who was killed was struck by a tractor trailer at the facility, according to Boston 25 News.

Massport, the company who operates the terminal, issued the following statement on the fatal accident:

The safety and security of those that use our facilities is our top priority. The unfortunate accident this morning involved the death of a truck driver accessing Conley on behalf of a private trucking company. An investigation into the accident is currently underway.

Officials closed the terminal soon after the accident. It isn’t clear when the facility will reopen.

The identity of the truck driver has not been released.

This is a developing story.