LOS ANGELES - Michael Jackson's former attorney says the death investigation has become a full-fledged criminal probe with authorities looking toward the kind of court case they could build against the pop star's physician.
Federal and local police this week served two search warrants in Houston, one at the clinic of Dr. Conrad Murray and the other at his nearby storage unit.
The warrants gave authorities permission to seize transport receipts and other items. Among them: a weight loss drug, storage receipts, notices from the Internal Revenue Service and computer hard drives.
Attorney Mark Geragos, who once represented Jackson, said Friday this indicates investigators are following a trail which involves purchases of drugs by Murray and possible shipment of drugs to Jackson's home.
Authorities still say Murray is not a suspect.
