The Celtic manager claimed items were thrown at him as he sat close to Aberdeen supporters at their team's League Cup semi-final against St Johnstone in February. At the time Lennon said he had changed seats during the game and also felt the need to leave the match early. His agent Martin Reilly claimed at the time Lennon was also spat on.
But Police Scotland said an investigation by its football coordination unit had uncovered insufficient evidence to take the matter any further. "I am annoyed at that," said Lennon. "I don't apportion any blame to the police but I do feel as if some people have got away with it.
"It does disappoint me but I don't know the substance of the investigation. Myself, Garry [Parker, Celtic's first team coach] and Tim [Williamson, the head physiotherapist] gave statements to the police about four or five weeks ago. I always felt it might be difficult to pinpoint someone throwing the coin. I certainly didn't make it up or imagine it.
"I don't know if anyone from their side [Aberdeen] gave a statement. It is what is and I'm sure the police did what they could."