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Brazil's federal audit court TCU recommended the suspension of works on 11 infrastructure projects across the country due to wrongdoings.
In total, TCU said it found irregularities in projects totaling 26.2bn reais (US$8.06bn). According to the authority, changes its own technicians suggested could reduce costs in these projects by 3.5bn reais.
TCU recommended halting, among others, the adaptation of the urban crossing in Juazeiro city in Bahia state, works on the BR-040 highway in Rio de Janeiro, and the bus lanes projects of Radial Leste avenue in São Paulo.
The court also calls for works to be halted on the Angra III nuclear power plant in Rio de Janeiro.
TCU itself, however, has no power to suspend works, as Congress decides on the recommendations.
Though 11 projects are recommended for suspension, the court said serious irregularities emerged in 72 out of the 94 projects audited. The most common wrongdoings were nonexistent, deficient or outdated project plans and overpricing.