Building of a US$9 billion (6.7 billion EUR) high-speed rail linking Brazil's two biggest cities could start as early as next year.
Brazil's government may hold a tender in August for the construction of the 403-kilometer (250-mile) rail link between Rio de Janeiro and Sao Paulo, the ministry said in a statement.
Brazilian, South Korean, French and Italian companies have shown interest in building the rail link, the ministry said. French train maker Alstom made a preliminary proposal to build the link, according to a report by the Agencia Estado news service in April.
The high-speed link is expected to be built in seven years.
A bullet-train link between Rio and Sao Paulo has been discussed for decades, but never reached an advanced planning stage. The two cities have a combined population of almost 30 million people.
About 1,600 fighters of private military company (PMC) Wagner left the war zone in western Libya, Anadolu agency reports with reference to Mohammed Kununu, a representative of Libyan government forces.
According to him, PMC employees involved in the Libyan conflict on the side of Field Marshal Khalifa Haftar departed from Beni Walid airport near Tripoli on board two military transport aircraft. Their destination remains unknown.
Dmitry Peskov, an official spokesman for Russian President Vladimir Putin, was discharged from hospital.
"Yes, that's true," Peskov told reporters.