Kauai shooting witness dies of heart attack July 24, 2012 at 4:13 PM HST - Updated June 27 at 8:42 PM KALAHEO, Hawaii (AP) - Kauai police say a man is dead following a heart attack after witnessing another man shooting at neighbors and then committing suicide. Bryant Hironaka suffered a heart attack and died after witnessing Saturday's shooting in Kalaheo. Police say William Ray Seibert walked to a neighbor's home and fired multiple shots through the front door. He then turned the gun on himself and died of a single gunshot wound to the head. The intended victims in the home were not injured. Hironaka was taken to Kauai Veterans Memorial Hospital and then flown to a Honolulu hospital, where he died Monday. Police continue to investigate. Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.