A black African illegal immigrant has confessed to killing American artist Ashley Olsen in her Italian apartment, who was punched and strangled with a USB cord in what police say was a jealous drug-fueled frenzy

Cheik Tidiane Diaw, 25, told officers that he strangled Olsen after the pair had sex when she told him that he had to leave because her boyfriend was coming back. The Senegalese illegal alien was caught because of DNA evidence from a used condom and cigarette found in the toilet - which he had tried to flush away unsuccessfully. Italian police said that they had to swoop on him quickly because they feared he was about to flee Florence. The chief prosecutor said that the murderer had initially given a false alibi to police when he was first questioned. He was freed but then re-arrested when his DNA was matched. Olsen, whose funeral will be held in the Italian city, suffered two fractures to the skull and was strangled with a USB cord.