A Christian student was beaten and burnt to death Thursday by fellow students in northwestern Nigeria after she was accused of making a ‘blasphemous’ social media post, witnesses and police said.

Deborah Yakubu Samuel, member of the Evangelical Church Winning All, was stoned and then burned to death when she returned to classes after a holiday. A group of students attacked her due to allegedly blasphemous messages she is accused of having sent as part of a students’ WhatsApp group.

“Students forcefully removed the victim from the security room where she was hidden by the school authorities, killed her and burnt the building,” said Sokoto police spokesperson Sanusi Abubakar.

A video of the incident posted on social media and verified by The Associated Press showed Samuel lying on the ground as she was stoned and beaten with planks. The young men surrounding her then dumped tires on her, and set them ablaze.

Abubakar said two students have been arrested in connection with the incident while an investigation directed by Sokoto Governor Aminu Tambuwal is underway.

“The suspects in the viral video on Twitter were spotted and will be (identified) soon,” he said.