MAIDUGURI, Nigeria — A Nigerian air force fighter jet on a mission against Boko Haram extremists mistakenly bombed a refugee camp on Tuesday, killing more than 100 refugees and aid workers, a Borno state official said.

Military commander Major General Lucky Irabor confirmed an accidental bombardment in the northeastern town of Rann, near the border with Cameroon, saying ‘‘some’’ civilians were killed.

It was believed to be the first time Nigeria’s military has admitted to making such a mistake in a region where villagers have in the past reported civilian casualties in the near-daily bombings targeting the Islamic militants.

The Borno state official, who was helping to coordinate the evacuation of wounded from the remote area by helicopters, said more than 100 refugees and aid workers were among the dead.

Associated Press