NAIROBI, Jan 11 (Reuters) - A U.S. air strike on Somalia has failed to kill three top al Qaeda suspects, a senior U.S. official said on Thursday. "We are still in pursuit. We and the Ethiopians and everyone else wants to interdict terrorists," said the official, who declined to be named. The United States on Monday hit a village in southern Somalia in an attempt to take out an al Qaeda cell accused of bombing two U.S. embassies in 1998 and an Israeli-owned hotel in 2002.