A 19-year-old man has been arrested over a data protection offence after a Scottish referee’s details were leaked online, Police Scotland said. Personal information relating to John Beaton was leaked on the internet following the penalty controversy in Celtic ’s win over Motherwell on Wednesday evening, leading to him and his family being placed under police surveillance . Beaton awarded a penalty after Motherwell midfielder Sam Nicholson was adjudged to have handled the ball during stoppage time in the clash against Celtic. Celtic went on to score the penalty and win the game 3-2, allowing them to narrow the gap on William Hill Premiership leaders Hearts to just one point ahead of the final game of the season, where both sides will meet in a showdown for the title. The ruling drew significant condemnation across Scotland, with the Foundation of Hearts, the league leaders’ majority shareholder, expressing "extreme concerns" over refereeing standards during the title run-in.…