Former Lazio captain Giuseppe Signori has been freed after 13 days of house arrest, but is still under investigation in the latest Italian match-fixing scandal.

The judge handling the initial inquiry tells the ANSA news agency that Signori was freed because enough testimony has been gathered to advance the case and there was no risk of him tampering with evidence or committing more match-fixing.

Signori, who retired in 2006, allegedly led a group of bettors in Bologna that had a direct impact on match-fixing. He denied involvement when he was questioned by prosecutors last week.

Signori was one of 16 people arrested June 1 as part of an inquiry focused on 18 matches mostly in Serie B and C. However, key suspects in the case have reportedly divulged information about top-division games that were fixed.