A former Venezuelan municipal police chief and anti-government activist says he helped organize an operation to launch armed drones over a military rally on Saturday that President Nicolas Maduro has called an assassination attempt.

In an interview, Salvatore Lucchese, a Venezuelan activist who was previously imprisoned for his role in past protests, told Reuters he orchestrated the attack with a loose association of anti-Maduro militants known generally in Venezuela as the "resistance."

The "resistance" referred to by Lucchese is a diffuse collection of street activists, student organizers and former military officers. It has little formal structure, but is known in the country mostly for organizing protests in recent years in which demonstrators have clashed with police and soldiers.