The man who stabbed an American near the U.S. Embassy in Cairo on Thursday has confessed that he committed the crime "to seek revenge over U.S. policies in the Middle East," according to an embassy statement released Friday citing police sources. The suspect, whose name has not been released, asked Christopher Stone his nationality twice before stabbing him in the neck, prosecutors said. Stone, a professor of Arabic who had been visiting the Embassy to complete paperwork for his wife, is recovering from the attack and is expected to be released from hospitalization soon. The embassy also said that the investigation has identified the stabbing as an isolated incident, not tied to any larger conspiracy. Police presence has been increased around the embassy while the suspect awaits trial for attempted murder.