Stewart Regan, Scottish FA chief executive:

“The Scottish FA is horrified and saddened by the news that the Celtic manager, Neil Lennon, has been subjected to another – reportedly ‘viable’ – threat along with two other prominent supporters of the club.

“It is hoped that swift action by Strathclyde Police will succeed in capturing the perpetrators of these cowardly acts and bring the full weight of justice down on them.

“Scottish football should be a safe and entertaining environment for players, coaches and supporters. It must not be used as a platform for religious intolerance or hatred.

"On a personal note, as a relative newcomer to this country, I find this recent situation both depressing and deplorable. With the support of the police, the Scottish Government and our other league bodies, it is our intention to help rid Scottish football of this unwanted poison which seems to be prevalent in society.”