Ashley Gill-Webb arrives at Stratford Magistrates' Court, in London, Friday, Jan. 11, 2013. Prosecutors say Gill-Webb got into an exclusive seating area before the mens 100-meter final at the London Olympics without an eligible ticket before hurling abuse at Usain Bolt and throwing a bottle at the starting line. (AP Photo/Matt Dunham)

London - A man who threw a plastic beer bottle onto the track and shouted abuse at Usain Bolt before the men's 100-meter final at the London Olympics has been convicted of public disorder.

Ashley Gill-Web, who suffers from bipolar affective disorder, was found guilty by a London court on Friday of using threatening, abusive or disorderly behavior.

District Judge William Ashworth told Stratford Magistrates' Court that Gill-Webb's actions were “rational and wrong” and intended to cause distress.

The case was adjourned until February 4 for sentencing.

Bolt, who won the gold medal in 9.63 seconds, said after the race that he hadn't noticed the incident.

The 34-year-old Gill-Web, who lives in the northern city of Leeds, used an old ticket to get into the Olympic Stadium. - Sapa-AP