A Scottish football fan has been found guilty of racially abusing two of Celtic's black players during a game between the Parkhead side and Dundee.
Martin was found guilty at Dundee Sheriff Court
Alan Martin was reported to police by a teenage fan who was sickened by his behaviour during the Dens Park match.
The 50-year-old shouted racial abuse at Celtic's Bobo Balde and Momo Sylla during the March fixture.
He denied making racist remarks but was found guilty at Dundee Sheriff Court. Dundee FC are to ban him for life.
Martin was reported to police during the match by a 14-year-old boy who was near him in the crowd.
Officers kept him under surveillance during the second half.
The court was told that Martin, who was a season ticket holder, had hurled insults at the black players and had made monkey noises.
Sheriff Robert Vaughn found him guilty and deferred sentence for reports.
The sheriff also praised the actions of the young Dundee fan.
He said: "From the outset, I was very impressed by the evidence given by the 14-year old. He was so affected by what he saw, that he went out of his way to point out to police officers the actions of a fellow season ticket holder who sat beside him."
A spokesman for Dundee Football Club condemned the fan's actions.
He said: "There is no place for this in Scottish football, or football anywhere in the world, and firm action must be taken by all clubs to stamp out racism.
"It was an isolated incident, but it is still our responsibility to take firm action as well as the courts."