Brazil’s Supreme Court on Monday ordered the house arrest of former President Jair Bolsonaro, who is accused of overseeing a plot to cling to power after losing the 2022 election.

His case lies at the center of President Trump’s tariff feud with the South American nation.

Mr. Bolsonaro, who was ordered last month to wear an ankle monitor while he awaited trial, had been told to remain at home most hours and to stay off social media platforms.

In the new ruling on Monday, Justice Alexandre de Moraes said that the former president had violated those terms, indirectly sharing posts and videos on social media through the accounts of his allies and sons.

Justice Moraes also ordered the Brazilian police to seize Mr. Bolsonaro’s cellphone and limited visits to his home, except by his family and lawyers.

Mr. Trump has called the case against Mr. Bolsonaro, a political ally, a “witch hunt.” Last week, the American president slapped a 50 percent tariffs on some Brazilian products. He also imposed sanctions on Justice Moraes, accusing him of censoring conservative voices online.