The incident occured at an Iron Age site near Market Harborough. Metal detector hobbyists throughout England have been encouraged to aid in finding historic artifacts, but some are using the tools for more nefarious reasons.
Update
An update to this story is here: http://scatoday.net/node/3343

HI I AM STILL A FREE MAN BUT
well we answered bail on the
i recently appered at liester
The Treasure hunter magazine