A lawsuit between Nathan Carman and the National Liability & Fire Insurance Co., and BoatUS is heading to trial this summer. Carman’s boat sank with his mother on board and the insurance companies are disputing his $85,000 claim.

According to WTNH tv station in New Haven, Conn., August 12 will be the start date for the National Liability & Fire and BoatUS to challenge Carman’s claim. They reportedly allege that Carman committed fraud by deliberately sinking the 31-foot boat in September 2016 after he left Rhode Island on a fishing trip with his mother, Linda Carman. After the sinking, Nathan Carman was rescued, but his mother was never seen again.

Carman denies the allegations and in a countersuit says the insurers breached their contracts. In 2013, Carman was reportedly identified as a “person of interest” in the shooting death of his grandfather.