Its quite odd.
The IRA use to do that all the time. Put hoax devices on motorways during their campaign. (I'm not suggesting its the IRA).
When there is more info, I'll post it up.
(A UK program called Casulty last week was based around a bomb going off on a coach by animal extremists. Copy cat?)
news.bbc.co.uk
(visit the link for the full news article)

