Members of unions that represent merchants, transport workers, local producers and neighborhood associations march Tuesday in Cochabamba, in central Bolivia, "in defense of democracy" and to demand an end to the roadblocks set up by farmers from the Altiplano who are calling for the resignation of President Rodrigo Paz. Photo by Jorge Abrego/EPA

May 20 (UPI) -- Bolivia is facing one of its most severe political and social crises in recent years as President Rodrigo Paz's government and U.S. officials warned of what they described as "a coup attempt underway" amid violent protests, prolonged road blockades and widespread shortages.

Authorities accuse allies of former President Evo Morales, along with armed groups and organized crime networks, of attempting to destabilize the democratically elected government.

In an interview Wednesday with Radio Mitre in Buenos Aires, Bolivia's foreign minister warned that the country faces an attempted coup by those seeking to remove Paz's government. Paz took office less than a year ago following a disputed transition process.

Foreign Minister Aramayo alleged the existence of armed factions and accused Morales of resisting judicial proceedings and encouraging political destabilization.