A small bag of white powder found under a desk in the space shuttle hangar was not cocaine as originally believed, NASA said Wednesday.

An initial analysis by NASA indicated the substance found in the building where shuttles are prepared for launch was cocaine.An investigation was opened by security officers from NASA and the contractors responsible for shuttle preparations and security at the Kennedy Space Center.

NASA conducted another test that identified the substance as calcium hydrogen phosphate, which is used in high school chemistry kits.