MCCANDLESS, Pa. (AP) -- The Allegheny County medical examiner's office says one of two young children reportedly found unresponsive in a bathtub in the Pittsburgh suburbs has died. County police Lt. Andrew Schurman said the children, 3 and 6 years old, were found in the tub of their McCandless home before 10 a.m. Police haven't said if they believe the children were bathing or entered the water for some other reason. They're also not commenting on whether the children's parents or other adults were home at the time. Police investigators and forensic crews continued to process the scene Tuesday afternoon. The names of the children were not immediately released.