A high schoolstudent accused of bringing a loaded gun to school will be placed on home detention pending trial after he was charged with multiple firearms offenses last week. The 18-year-old Salem High School student was arrested Friday after his 7-year-old brother, who attends John Fenwick Academy in the Salem district, came to school with a handgun in his bag. The younger student apparently told a teacher that he discovered the loaded weapon, an Intratec Scorpion semi-automatic handgun, in his bag, according to school officials. During discussions with the child, he indicated that his older …