CARACAS — Venezuela’s pro-government constitutional assembly stripped two opposition lawmakers of their immunity from prosecution on Wednesday, accusing them of having roles in a drone attack that authorities say was an attempt to kill socialist President Nicolas Maduro. 

The National Constituent Assembly voted unanimously to lift the protection for Julio Borges and Juan Requesens, who have seats in the opposition-controlled legislature. The move came after the Supreme Court ordered the arrest of Borges, who lives in exile in Colombia’s capital, Bogota. Requesens was arrested on Tuesday.

Maduro has accused the two of being tied to a weekend incident in which two drones loaded with explosives exploded while he spoke at an outdoor military celebration.

Wednesday’s developments threaten to deepen Venezuela’s political crisis as opposition lawmakers accuse the government’s ruling party of using the alleged attack to clamp down on the opposition.

Video circulating Tuesday on social media showed Venezuela’s political police arresting Requesens, a 29-year-old deputy in the opposition-controlled National Assembly. Supporters say he was kidnapped from his apartment.

In ordering the 48-year-old Borges’s arrest, the Supreme Court accused him of ‘‘flagrant crimes,’’ including public incitement, treason to the fatherland, and attempted homicide.

Earlier Wednesday, Borges, who has rejected the accusation, met with top lawmakers in Colombia, which has blamed Maduro’s government for causing the crisis.

‘‘‘‘The only promoter of violence is a man named Nicolas Maduro,’’ Borges said.

associated press