Tugboats trying to free freighter in Detroit River

Tugboats have been trying to pull a 579-foot coal freighter free after it ran aground in the Detroit River south of the city.

The U.S. Coast Guard said Friday that it was monitoring salvage operations for the self-loading barge McKee Sons, which got stuck about 3:15 a.m. in the Trenton Channel near Grosse Ile.

Four tugs had been trying to free the freighter on Friday, with the Detroit Free Press saying a fifth was being called in.

Once freed, the freighter was expected to be tugged to the Detroit Edison Pier, where it was originally headed for docking after leaving Cleveland.

The Coast Guard says there are no signs of pollution from the freighter. Vessel traffic in the area was being affected by the grounding and tugging operations.