A bridge linking two northern states in Brazil collapsed, sending cars and trucks plunging into the river below. A sulphuric acid spill is complicating the rescue operation.

Brazilian authorities are investigating after a bridge collapsed Sunday, killing at least four people and sending trucks loaded with sulfuric acid and pesticides plunging into a river, raising concerns about water contamination.

Authorities in Brazil on Thursday said the risk of acid pollution from a bridge collapse in the country's north has been contained, as they raised the death toll from the disaster to eight.A local government environment official,