According to the search warrant, the roommate did not see Mendoza again until Dec. 21. The roommate said that while Mendoza was gone, he saw what appeared to be a blood stain in the carpet of Mendoza's bedroom. The roommate said on Dec. 21, he saw Mendoza going in and out of the apartment, and he said the carpet appeared to have been cleaned. He said Mendoza left, and the roommate has not seen him since.