The bloody clothes seized from a ceiling at 10 Amistad St. on Saturday are not what Annie Le GRD ’13 was wearing when she entered that facility Tuesday, a source within the Yale Police Department said today.

The official, who spoke on the condition of anonymity to discuss an ongoing investigation, added that the blood on the material could be either human blood or animal blood; many animal experiments are conducted in the research facility, he said, and so officials are currently analyzing the blood to determine its origins.

Aside from this development, it has been a mostly quiet afternoon at 10 Amistad St.