Reports: American's blood places her in Italy apartment the night roommate was slain

A single fingerprint and a trace of blood belonging to American student Amanda Knox were found in the Perugia apartment where her British flatmate was slain, but the apartment was otherwise cleaned, news reports said.

Investigators have concluded that the blood was left on the bathroom faucet sometime between Nov. 1 and 2, the ANSA news agency reported, placing Knox in the apartment either the night Meredith Kercher, 21, died or the next morning.

Knox has acknowledged she was home the night Kercher was killed by a knife wound to the neck, and returned the next morning, but has denied any wrongdoing.

Calls to Knox's attorney were not answered …