Complex sentence: Rigby and his wife had retired to the Margaret River area in Busselton, Perth, Western Australia, in 2003, where he died of a heart attack on 15 November, 2006.
Split into simpler sentences: Rigby and his wife had retired to the Margaret River area in Busselton, Perth, Western Australia, in 2003. He died of a heart attack on 15 November, 2006.