Complex sentence: Convicted of brutally assaulting his former girlfriend Ann Helen Karlsen with a hammer, to have strangled her and then dumped her body in the sea off Tananger during the night on 6 March 2005.
Split into simpler sentences: Convicted of brutally assaulting his former girlfriend, Ann Helen Karlsen. Ann was struck with a hammer, strangled, and her body then dumped in the sea off Tananger on the night of 6 March 2005.