A man dressed in a woman’s burqa blew himself up in the main market in Chad’s capital N’Djamena early on Saturday, killing 15 people and injuring 80, a police spokesman said.

At least fifteen people were killed on Monday in twin suicide bombings that ripped through in a crowded market in northern Fotokol town of Cameroon, security sources told Anadolu Agency.

“The United States praises the security forces of Cameroon, Chad, Niger, and Nigeria for their timely responses to these callous and cowardly attacks on innocent civilians” he further said.

TERRORIST sect Boko Haram have issued a joint video in conjunction with Middle East militant group Islamic State of Iraq and Syria (Isis) in what is the first formal piece of propaganda between the two of them.

Nigerian officials said the Boko Haram gunmen armed with grenades and assault rifles attacked a civil prison in southern Nigerien city of Diffa, reported Press TV.

The United States of America has condemned the spate of Boko Haram terror attacks in the Lake Chad basin describing it as “horrific and indiscriminate”.

The victims were shot when the large group of Boko Haram extremists stormed their village and fired at fleeing residents.

“What was happening elsewhere and what we heard about from media reports is now happening here”, said Zenaba, a woman trader in her forties. Heavy security prevented the attackers from getting into the terminal.

On June 15, two suicide bomb attacks took place in N’Djamena, leaving 38 people killed and over 100 injured.

Boko Haram now serves as the West African wing of the Islamic State terror group, better known as ISIS.

The attacks come as Nigeria and its neighbours gear up to deploy a strengthened regional force against Boko Haram, which has increased the frequency and intensity of its attacks on civilians.