LONDON — Two men were charged on Friday with sending letter bombs to Celtic manager Neil Lennon and two prominent fans of the Glasgow club.

Trevor Muirhead, 43, and Neil McKenzie, 41, appeared at Kilmarnock Sheriff Court charged with three counts of dispatching packages containing explosive substances and two of sending hoax bombs. Neither man entered a plea and both were detained in custody.

The packages were intercepted before reaching their targets and did not explode.

The incidents happened in the weeks after a tumultuous Scottish Cup match between Glasgow rivals Celtic and Rangers in March, when three Rangers players were sent off before Lennon and Rangers assistant manager Ally McCoist became involved in a heated exchange after the final whistle.

The first parcel bomb targeting Lennon was found on March 4 and a second was intercepted at a sorting office outside Glasgow on March 26.