Hundreds of Nigerian girls abducted last week from a boarding school in the country’s northwest have been released.

The girls, ages 10 and up, dressed in light blue hijabs and barefoot, packed into Zamfara state’s Government House conference room. They appeared calm, chatting to one another as they sat in long rows while journalists photographed them. They will receive a medical checkup before being returned to their parents.

Zamfara Gov. Bello Matawalle said that 279 girls had been freed after being abducted from the Government Girls Junior Secondary School in Jangebe town on Friday. The government last week said 317 had been kidnapped. It was not clear if the higher number was an error or if some girls were still missing.

“Alhamdulillah! (God be praised!) It gladdens my heart to announce the release of the abducted students,” Matawalle said in a post on Twitter early Tuesday. “I enjoin all well-meaning Nigerians to rejoice with us as our daughters are now safe.”

Officials said “bandits” were behind the abduction, referring to the groups of armed men who operate in Zamfara state and kidnap for money or to push for the release of their members from jail.