Brasília, Brazil - Brazilian authorities on Saturday arrested Braga Netto, a former defense minister and close ally of ex-president Jair Bolsonaro, on suspicion of obstructing an investigation into an alleged coup attempt in 2022, a police source told AFP.

Brazil's Federal Police said it had detained "people who would be obstructing" the investigation.

"Braga Netto was arrested in the operation," the source said.

In late November, police released a report recommending the indictment of former far-right president Bolsonaro and several dozen allies for attempting a coup d'état to prevent the inauguration of Luiz Inácio Lula da Silva.

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The list included Netto, who was also his running mate in the 2022 elections.

Attorney general Paulo Gonet has been examining the allegations to see if evidence supports charges being laid against Bolsonaro and the 36 others named as co-conspirators.

The 884-page report drawn up after a nearly two-year police investigation urges Gonet to indict Bolsonaro and the others for planning an attempted coup and seeking to "violently overthrow the democratic state."

It details alleged collusion between Bolsonaro and some of his officials, including members of his military brass, to claim fraud in the 2022 elections won by Lula and to use decrees to sideline the Supreme Court.

"The then-President of the Republic, Jair Bolsonaro, actively participated in the creation of the coup plan, being directly involved in the drafting of documents and strategies to remain in power, even after the electoral defeat," the report said.

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Bolsonaro was also "fully aware" of an alleged plan by elite soldiers to assassinate Lula, his vice president, and a Supreme Court judge, said the report.

The plan, called "Green and Yellow Dagger," was allegedly discussed at Netto's home. It was printed at the Planalto palace, the seat of the Brazilian presidency, according to investigators.

A draft of the coup plan was found at the headquarters of Bolsonaro's Liberal Party among the belongings of one of Netto's advisors.