A teen sought by authorities after two of his relatives were found dead Tuesday in Acton, Massachusetts, has been charged with murder, and investigators say he was using artificial intelligence to make searches about the killing of his family, the Middlesex District Attorney's Office announced Wednesday. Middlesex District Attorney Marian Ryan initially said Tuesday that authorities were looking for 17-year-old Arjun Aravind, who lives in the Martha Lane house and was unaccounted for after a woman and male teenager were discovered dead there just after 6:30 p.m. He was found early Tuesday morning and taken into custody in Wayland.