Argentine police cleared a hotel where human rights activist Hebe de Bonafini was attending, after they received an anonymous bomb threat Saturday.
Bonafini, president of the Mothers of the Plaza de Mayo, was participating in a Communication Congress in Mar del Plata. After evacuating the building, police confirmed the threat was a hoax and Bonafini returned to Atilra hotel to finish her presentation.
"In ten minutes the hotel will explode and all these fucking montoneros will die," said a voice in an anonymous phone call to the hotel. Montoneros is the name of a leftist guerrilla group active during the 1960s in Argentina.
The mayor of Ensenada Mario Secco, who was also attending the event, branded the act a form of political persecution against Bonafini. "When many chose to hide, Hebe stood up to the military tanks," he said.
Argentine judge Marcelo Martinez de Giorgi recently cancelled an arrest warrant against the human rights activist and president of the Mothers of the Plaza de Mayo.
The iconic 90-year-old activist was summoned to appear in court to testify in a case that accuses her organization, which searches for missing children from the dictatorship era, of siphoning off public funds from a social housing program.
The activist called supporters to join her in a march of resistance on August 26-27 against the government of Mauricio Macri.
The Mothers of Plaza de Mayo have held a weekly customary march every Thursday since 1977 to commemorate the victims of the U.S.-backed "Dirty War" that disappeared some 30,000 in the country.
WATCH: Argentina: Hebe Bonafini Charged with Inciting Violence