LAGOS, Nigeria — Nigeria's Tax Appeal Tribunal has ordered Mobil Oil Nigeria to pay $83.4 million in education taxes owed from 2008.

The official News Agency of Nigeria reported Mobil's lawyer argued that the assessment breached an agreement with the government and the Nigerian state oil company allowing Mobil to deduct all taxes due to other agencies from the tax paid to the federal and state governments.

The five-man appeal tribunal ruled the agreement expired in 2003 and was never renewed.

Mobil Nigeria couldn't be reached for comment Friday night. It was unclear whether it would be liable for the education tax for the years following 2008.