A UN official at Moroni airport, who declined to be named, said the control tower had received notification the plane was coming in to land, and then lost contact with it.
Yemenia is 51 percent owned by Yemen and 49 percent by Saudi Arabia. Its fleet includes two Airbus 330-200s, four Airbus 310-300s and four Boeing 737-800s, according to its Web site.
The Comoros comprises three small volcanic islands, Grande Comore, Anjouan and Moheli, in the Mozambique channel, 300km northwest of Madagascar and a similar distance east of the African mainland.
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