URGENT ¥¥¥ Prosecutors now unsure testosterone found at Pistorius home

South African prosecutors admitted late Wednesday they were no longer sure that the substance they found at Olympian Oscar Pistorius's home was testosterone, rowing back dramatic court testimony from just hours before.

"We can't tell what it is," said national prosecuting authority spokesman Medupe Simasiku. "We can't confirm or deny it until we get the forensic report."