SMITHTOWN - The mother of a Smithtown Marine wants answers regarding the death of her son, who died this month while on vacation with his girlfriend in Cancun, Mexico. Mexican police say Sgt. Joseph Bitet, a Marine and Army reservist, died Jan. 6 after falling seven stories from his hotel window. Bitet's mother claims surveillance video shows her son with another man at the time he allegedly fell. "He was clearly with someone in every frame of the tape until 13 minutes before it was reported," she says. Rep. Steve Israel (D-N.Y.) says he is pressing the Mexican ambassador to the United States to investigate the situation. Marine from Smithtown dies in Cancun