Updated

Venezuela's attorney general has ordered the arrests of three government opponents who are wanted for questioning in an alleged plot to assassinate President Nicolas Maduro.

Luisa Ortega Diaz charges that groups are seeking to destabilize Venezuela's socialist government and have formed "violent political plans" against Maduro and other high-ranking officials. Authorities investigating the alleged plot had summoned the three men to appear as witnesses.

Arrest warrants have been issued for Diego Arria, a former presidential candidate and United Nations ambassador; Pedro Burelli, former external director of the state oil company Petroleos de Venezuela; and Ricardo Koesling, a lawyer who has been a strong critic of the Maduro administration.