Ten militants of the pan African jihadist group Boko Haram were executed by a firing squad in Chad on Saturday, media reports said.

"They were executed this morning on a shooting ground north of N'Djamena," a source told AFP.

The Boko Haram members were executed a day after they were found guilty of terrorism charges and sentenced to death at a Chadian trial court.    

An N'Djamena-based special criminal court found the militants guilty of criminal conspiracy, murder, complicity in murder and complicity in the destruction of property using explosive devices at the end of the three-day trial on Friday, according to Africa Press Agency (APA). The convicts pleaded guilty and had admitted the charges against them.

Among the executed was extremist outfit's commander Bahna Fanay, alias Mahamat Moustapha, the Associated Press reported. Moustapha was the mastermind behind the June 15 bombing in N'Djamena that killed nearly 40 people.  

Fanaye was the ringleader of a network smuggling weapons and munitions between Nigeria, Cameroon and Chad. He was also responsible for procuring weapons and "recruiting and managing Boko Haram members," Chad's top prosecutor Alghassim Kassim told reporters after Fanaye's arrested in June, according to The Daily Post.

Chadian capital N'Djamena served as headquarters of a regional force set up to fight militants, BBC News reported. The June 15 attack was the first Boko Haram bombing in Chad followed by a series of deadly suicide bomb blasts in June and July.