New documents filed in the Conrad Murray manslaughter case has claimed that the last videos of Michael Jackson were so top secret that they were transported in an unmarked truck, accompanied by armed guards in the dead of the night.
The documents were produced into the case after Murray demanded to see all of the rehearsal videos of the pop superstar shot for the doomed 'This is It' tour.
His lawyers believe it could show the star was in such a frail condition that there were many other reasons for his death other than Propofol.
The lawyers subpoenaed the tapes, but now Sony Pictures - which has possession of the videos - is objecting for several reasons.
Sony claimed there are more than 20 boxes of videos and it would cost 200,000 dollars to log and reproduce all of them.
But in the documents, the company describes how top secret the videos were to the studio.
"When they were transported to the Sony lot in Culver City, the transport in an unmarked truck was accompanied by armed guards in the dead of the night," TMZ.com quoted Sony's lawyers as saying.
When the tapes were in an editing bay, security guards were posted outside the door and no Internet access was allowed in the room.
And a Sony honcho also submitted a declaration that says the videos "have a high monetary value inherent in their potential for future uses. Those uses include one or more 'anniversary editions'."