Liberty Mutual may be required to defend two seafood companies from negligence claims filed by an employee who sustained injuries after a heroin overdose at work. In True North Maine Inc. v. Liberty Mutual Insurance Co., the U.S. District Court for the District of Maine held on Tuesday that True North Maine Inc., of Machiasport, Maine, and its parent company, Cooke Aquaculture Inc., of St. John, New Brunswick, could continue with their claims asserting that their U.S. liability policy did not contain an exclusion that would preclude its insurer from defending them against the worker’s claims.