A strike by workers in Brazil has stopped construction at a World Cup stadium in Salvador, the third host city affected by strikes this month.

Work was halted at the Fonte Nova stadium Thursday, a day after workers voted to remain on strike in Fortaleza and Natal, two other World Cup venues in the northeast part of the country.

The strike in Salvador also affected some of the infrastructure work needed for the 2014 World Cup.

The union said the construction workers want better salaries and benefits, but failed to reach an agreement with the local government despite ongoing negotiations since January.

There have been strikes in the past at other World Cup venues in Brazil, including in Rio de Janeiro, Belo Horizonte and Recife.