A criminal investigation into why those three non-Bush-loyalists were booted from the Bamboozlepalooza event in Denver back in March?

A local TV station reports that the lawyer for the three says his clients were questioned yesterday as "part of an investigation into whether a man dressed in a dark suit and wearing an earpiece criminally impersonated a Secret Service agent when he escorted the three Denver residents out of the March 21 event."

The local office of the Secret Service confirmed that they are conducting a continuing investigation but declined to comment on the specifics.