Federal prosecutors say Nathan Carman of Vermont should remain behind bars pending trial

Federal prosecutors say Nathan Carman of Vermont, charged with killing his mother at sea in 2016 in a plot to inherit millions, should remain behind bars pending trial because he poses a flight risk and danger to others.

Carman, 28, who lives in Vernon, was charged in May with killing his mother during a fishing trip in 2016 off the coast of New England in which his boat sank. He was found floating in a raft and rescued eight days after departing from a Rhode Island marina. He pleaded not guilty in May in his mother’s death.

Prosecutors also have accused Carman of killing his grandfather who they say was shot in his home in Connecticut in 2013 as part of a scheme to obtain money and property from his grandfather’s estate. Carman has not been charged in that case.