Deadly protests rocked Venezuela on Sunday as voters broadly boycotted an election for a constitutional super-body that unpopular leftist President Nicolas Maduro vowed would begin a "new era of combat" in the crisis-stricken nation.
Anti-Maduro activists wearing hoods or masks erected barricades on roads, and scuffles broke out with security forces who moved in quickly to disperse demonstrators who denounced the election as a naked power grab by the president.
Authorities said 10 people were killed in the confrontations, which made Sunday one of the deadliest days since massive protests started in early April.
Maduro, widely disliked for overseeing an unraveling of Venezuela's economy, has promised the assembly will bring peace by way of a new constitution after four months of opposition protests in which more than 120 people have been killed.
Opposition parties sat out the election, saying it was rigged to increase Maduro's powers, a view shared by countries including Spain, Canada, Colombia and the United States.
The Trump administration is considering imposing U.S. sanctions on Venezuela's vital oil sector in response to Sunday's election, U.S. officials said.
Potential U.S. sanctions on sales of light crude to Venezuela's oil company PDVSA would hamper its already weak refining network.
Caracas was largely shut down, streets were deserted and polling stations were mostly empty, dealing a blow to the legitimacy of the vote. A bomb exploded in the capital and wounded seven police officers in what could be the spread of more aggressive tactics.
Critics say the assembly will allow Maduro to dissolve the opposition-run Congress, delay future elections and rewrite electoral rules to prevent the socialists from being voted out of power. The opposition vowed to hold protests again on Monday and to keep pressuring Maduro's cash-strapped government until he's forced from office.
"Even if they win today, this won't last long," said opposition supporter Berta Hernandez, a 60-year-old doctor in a wealthier Caracas district. "I'll continue on the streets because, not long from now, this will come to an end."