Because of her presidential ambitions, a beauty queen is in the custody of the Nicaraguan police

 Nicaragua's Citizens' Freedom Alliance party said authorities have detained a former beauty queen and its vice presidential candidate in November's elections, while President Daniel Ortega's government shows no sign of ending a crackdown on dissent.

Ortega's government has for months been detaining political opponents, including presidential hopefuls, in an election that the ex-Marxist fighter and Washington's Cold War opponent will run for a fourth consecutive term.

The Citizens' Freedom Alliance party said Berenice Quezada, Miss Nicaragua for the year 2017, was placed under house arrest.

"Quezada ... is under house arrest without a phone, subject to restrictions and prohibited from running for office," the party said in a tweet on its Twitter account. "We demand her release and respect for her human rights," the party said in a tweet.

Nicaragua's attorney general's office said in a statement on Wednesday that Quezada had committed acts "inciting hatred and violence" and that she should be placed under house arrest.

On Tuesday, the Confidencial news website reported that a "crime of terrorism" case had been filed against Quezada for the Electoral Council for her comments criticizing the lack of freedoms in the Central American country.

The party fielded Quezada's nomination papers on Monday as running mate Oscar Sopalvaro, a businessman and former leader of the US-backed right-wing Contra rebels fighting Ortega's Sandinista Liberation Front government in the 1980s.

Washington and the European Union imposed sanctions on Ortega's family, including his wife and deputy Rosario Murio, and important government figures, warning that the November 7 elections will not be free with most of Ortega's opponents in prison.

Many businessmen, journalists and politicians have fled abroad in the past few months for fear of arrest.