GAMBRILLS, MD - A lawyer for a Hudson County detective charged with fatally shooting a fellow driver during a roadside confrontation in Maryland says the detective's family was threatened.

According to court documents, a witness told investigators that the confrontation started when Joseph Walker's minivan cut off Joseph Harvey's car on Saturday. Harvey's passenger told police that Walker pointed a gun at them as the vehicles swerved at each other. The drivers got out and the passenger says he heard several shots. Harvey was pronounced dead at a hospital.

Walker's attorney reportedly said that Walker's wife and children were in the van and Harvey threatened to kill the family.

Walker of Eastampton, NJ is charged with second-degree murder and manslaughter. He's held on $1 million bond in a Maryland jail.