Marco Zaroli, born in Assisi on January 28, 1982, was a witness at the trial of Amanda Knox and Raffaele Sollecito. He was the boyfriend of Filomena Romanelli and was acquainted with Meredith Kercher and Amanda Knox.
On the morning of November 2, 2007, Filomena was at the Festival of the Dead when she heard from Amanda Knox that there had been a break-in at the cottage. Filomena called Zaroli and he and Luca Altieri drove to the cottage, arriving at about 1pm, shortly after the Postal Police. Zaroli was present when Meredith's bedroom door was broken down by Altieri and her body was found.
On February 6, 2009, Zaroli gave evidence in court: see Marco Zaroli's Testimony for the Italian language transcript.