A bomb "accidentally dropped" from a Chadian jet onto the home of a senior army officer Friday, killing four people and wounding two near N'Djamena, a prosecutor and an air force officer told AFP.

The blast destroyed the home of Mahamat Saleh Arim, deputy commander of the presidential guard and a close ally of President Idriss Deby Itno, an AFP journalist at the scene near the Adji Kossei airbase said.