More than 100 Boko Haram Takfiri militants have been killed by Cameroonian army during their attack on the African country.

"The Cameroonian response (to the attack) resulted in over 100 deaths among the aggressors," a Cameroonian government spokesman, Issa Tchiroma Bakary, said in a statement released on Monday.

According to the statement, the fighting took place in the northern border town of Fotokol on Saturday.

"There were no casualties reported on the Cameroonian side after the attack," the statement said, adding, "Our defense forces responded vigorously with mortar fire aimed at the positions held by units of the Boko Haram terrorist group that was behind the attack."

The militants reportedly retreated to the Nigerian border town of Gamboru Ngala, which is under their control for over a week.

Boko Haram has conducted a number of assaults and kidnappings in Cameroon, including the abduction of deputy prime minister's wife in late July. Following the abduction, the Cameroonian army launched a successful operation and rescued the abducted wife of Amadou Ali.

Nearly 650,000 Nigerians have fled their homes due to Boko Haram attacks and are displaced inside the country, while thousands more have taken refuge in neighboring countries, the United Nations High Commissioner for Refugees says.

Boko Haram -- whose name means “Western education is forbidden” -- says its goal is to overthrow the Nigerian government.

It has claimed responsibility for a number of deadly gun and bomb attacks in various parts of Nigeria since the beginning of its militancy in 2009. Over 10,000 people have so far been killed in the assaults.