sentences:  There were no priority differences within the group apart from the strategy of starting with those living closest.It had been rumoured over the years that confessed (but later disproved) serial killer Thomas Quick (Sture Bergwall) was involved in the murder and although the police had no interest in him, he was allowed to leave a sample by his own initiative in order to rule him out.A match was reported on 23 June 2004, and Olsson was arrested the same evening.