Head of Venezuela's congress says opposition lawmaker Machado has lost her seat

The head of Venezuela's congress says leading opposition politician Maria Corina Machado has lost her seat in the legislature and is no longer immune from prosecution for her alleged role fomenting violence in anti-government protests.

Diosdado Cabello said Monday that Machado violated the constitution by addressing the Organization of American States last week at the invitation of Panama, which ceded its seat at the Washington-based group so she could provide regional diplomats with a firsthand account of the unrest.

President Nicolas Maduro referred to Machado as "ex-congresswoman" on Saturday, a few days after arresting two opposition mayors for allegedly conspiring with the U.S. to topple his 11-month old administration.

Machado was traveling to Lima, Peru, on Monday, and her advisers weren't immediately available for contact.