Celtic chief executive Peter Lawwell does not believe that manager Neil Lennon will quit the club in response to the repeated threats that he has been subjected to this season.
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On Wednesday night Lennon was the subject of an alleged assault at Tynecastle as a Hearts supporter entered the field of play and attempted to hit him, while a package containing ammunition was found at Celtic Park on Thursday.
Meanwhile, it was also announced on Thursday that two men have been arrested in connection with an investigation into parcel bombs sent to the Celtic manager. Lennon has had round-the-clock security since March 4, when the first of two bombs addressed to him was intercepted.
Despite the repeated incidents, Lawwell is hopeful that Lennon will not walk away from his job at Celtic Park.
Lawwell told Celtic TV: "He's a remarkable man, his strength of character is incredible. He is proud to be the Celtic manager. I think he gets his energy and his strength through his job and through being part of this club and through the energy of the supporters.
"He knows he's not alone, he knows he's got the backing and that gives him the strength to go forward. I very much hope events don't lead him to thinking otherwise but, where I'm sitting, I feel he has the strength of character to take him forward."
Lennon's agent, Martin Reilly, also said his client would not leave the club. Reilly told STV: "First and foremost, Neil is shaken about the whole thing, but he won't be driven out of Scotland. Neil is concentrating on trying to win the SPL and the team has a Scottish Cup final to contest.
"At the end of the season I will sit down with Neil and if there are things that he's unhappy about then I will try and fix them. He won't throw in the towel."