Many sources also suggest that the attack on Washington was motivated by revenge for the looting of York in Upper Canada, the provincial capital, after the Battle of York in April 1813. Research completed by "The Washington Post", however rebuts that claim. "The earlier arson of parliament buildings in York was not raised as a justification until months later, after the British faced criticism at home and abroad for burning buildings in Washington". Earlier, the British had filed complaints only about the "wanton destruction" along the Niagara region and Lake Erie.