Nineteen people were killed in Thursday night’s attack on a Cameroonian village by Nigeria-based Boko Haram militants, a security source said in an updated toll, adding that most of the victims were beheaded.

Nineteen people were killed in Thursday night's attack on a Cameroonian village by Nigeria-based Boko Haram militants, a security source said in an updated toll, adding that most of the victims were beheaded.

"The final toll from this attack is 19 dead, with a majority of the victims decapitated," a security source said Saturday on condition of anonymity.

Security sources had previously said 10 civilians were killed in the cross-border raid on the village of Bia in Cameroon's Far North region.

The attack comes after a regional military offensive - which includes Cameroon - has claimed a string of successes in their fight back against the terrorist militants in Nigeria in recent weeks.

Bia, which borders  Lake Chad, has been identified previously by security forces as a recruiting ground for Boko Haram militants.

The source speaking to AFP on Saturday said security forces were slow to react to the raid on Bia, located in an area with several military bases.

Also during the night from Thursday to Friday, Boko Haram Militants attacked a Cameroon army position in Amchide, on the border with Nigeria.

The insurgency by Boko Haram has killed some 13,000 people in northeast Nigeria and sent 1.5 million fleeing their homes since 2009.

The group had in recent months widened its attacks into neighboring nations, prompting Chad, Cameroon and Niger to launch a joint offensive with the Nigerian army, resulting in a series of rebel-held towns and villages being recaptured in Nigeria's northeast.

Nigerian President Goodluck Jonathan's perceived inability to end the six-year insurgency was a factor in his election defeat last month.

Nigerian President-elect Muhammadu Buhari has vowed to rid the country of the "terror" of Boko Haram.