Azerbaijan's National Security Ministry says it prevented a group of Islamic militants from carrying out an attack against government structures and diplomatic missions in Baku.
A ministry spokesman says one suspect was killed and several others arrested during a sweep outside the capital Saturday. He said Azerbaijani officials believe weapons confiscated during the operation were stolen from the military.
The British Embassy in Baku closed down Monday while the U.S. Embassy reduced its operations because of the security threat.
U.S. State Department spokesman Sean McCormack says the embassy will likely be closed again Tuesday, but that operations will return to normal in the near future.