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.

At least one person died in the collapse, which happened as a city councilman who had complained about the bridge's problems was shooting video.

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.

Lorries containing pesticides and sulphuric acid plunged into the Tocantins river in the north of the country.

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,