More than 300 schoolboys kidnapped last week in the northwestern district of Kankara in the Nigerian state of Katsina were released on Thursday.

The authorities let the

BBC News

know.

The radical Islamic terrorist movement Boko Haram had claimed the kidnapping.

However, according to the Nigerian authorities, these are local groups that only claim to be linked to the terrorist organization.

The hundreds of school children were kidnapped by armed militants from their boarding school in northern Nigeria on Friday evening.

The police and army were deployed to find the children.

The kidnappers probably wanted to make a ransom.

It is unclear whether payment was also made.

Earlier, a video surfaced in which a student claimed to have been kidnapped by the group of Boko Haram leader Abubakar Shekau.

The boy said in tears that some of his schoolmates had been killed in Nigerian aerial attacks.

The video demanded that government forces stop searching and all non-Koran schools be closed.

Katsina is more often ravaged by violent gangs that attack and kidnap residents for ransom.

Boko Haram more often kidnaps school children.

Notorious was the kidnapping of 276 schoolgirls by the terrorist movement in April 2014. Many of them were imprisoned for years and still not all girls have been found.