Published Tuesday, 19 April 2011
The parcels, which Strathclyde Police say were "designed to cause harm", were sent to Lurgan-born Lennon, Paul McBride QC - who has represented Lennon at Hampden during his dispute with the SFA - and Labour politician Trish Godman.
The packages were intercepted in March and April.
They were initially thought to be hoax packages but analysis has revealed that they were viable.
These disgraceful events should remind all of us who love the game of football of what unites us as a community.
Scotland's First Minister Alex Salmond
Mr Salmond said: "Let us be quite clear - there is a major police investigation under way to ensure that the individual or individuals concerned are identified and apprehended, and then brought to book with the full force of the law.
"We will not tolerate this sort of criminality in Scotland, and as an indication of the seriousness with which we view these developments the Cabinet sub-committee met last Saturday to ensure that the police investigation has every possible support to come to a successful conclusion. We are confident that this will be the case.
"It is time to remember what we value in society, and unite to condemn those who use football as a pretext for their pathetic and dangerous prejudices."
The Scottish Labour Leader Iain Gray said the parcel-bombs were made by "back-ward thinking terrorists."
"This is not about football. This is an act of sectarianism and there should be absolutely no place for it in Scotland in the 21st century."
It is understood police have now offered safety advice to the intended recipients of the packages as well as to Royal Mail staff and workers in the mail room at Celtic.
Earlier this year packages containing bullets were sent to Lennon and to Celtic players Paddy McCourt and Niall McGinn, all of whom are from Northern Ireland.