The office of Tunisia’s president received a letter containing suspicious powder and is investigating the matter, a source said on Wednesday.

President Kais Saied did not open the letter and is in good health, the source said.

Some local websites reported that the lethal toxin ricin had been found in the envelope, and that it had been addressed to the presidency in the Carthage Palace.

Factional tensions have been growing within Tunisia’s leadership amid protests against widespread unemployment and social inequality.

Saied, a political independent who won election in 2019, told a gathering of national security officials this week that there were conspiracies afoot aimed at thwarting his work at home and abroad. He did not elaborate.

Parliament on Tuesday approved a cabinet reshuffle that deepened conflict between the prime minister and president.