Subscribe to one of our news e-mail lists . U.S. President George Bush has send a letter to the wife of Chinese fighter pilot Wang Wei, who has not been seen since his jet and a U.S. spy plane collided off China's south coast a week ago.
China blames the U.S. for the crash, and has asked for a formal apology.
U.S. diplomats have been allowed three visits to the crew since they landed, the most recent on Saturday. Top U.S. officials, including President Bush, have said they regret the apparent loss of the Chinese plane and its pilot in the incident. But they insist the United States will not issue an apology. An apology is not forthcoming. The new developments came as conflicting versions surfaced about the events surrounding the collision.