Demonstrators block a street at a rally against Venezuela's President Nicolas Maduro's government in Caracas, Venezuela/Reuters 

CARACAS/WASHINGTON: Washington imposed sanctions on eight Venezuelan officials for their role in creating an all-powerful legislative body loyal to President Nicolas Maduro, while a mayor-turned-fugitive called for more anti-government protests.

The new US sanctions targeted politicians and security figures but stopped short of actions against Venezuela's vital oil industry. Energy sector sanctions, which could cripple Venezuela's already ailing economy, are still being considered, US officials said.

The sanctions followed Friday's installation of a legislative superbody known as the constituent assembly, made up entirely of allies of the ruling Socialist Party and armed with the power to re-write the constitution.

Venezuela's Maduro affirms new legislative body as all powerful

The assembly's first action was to fire Venezuela's chief prosecutor, who had accused Maduro of human rights abuses, confirming opposition fears that the assembly would purge the government of dissenting voices.

Maduro's loyalist Supreme Court has, meanwhile, stepped up the prosecution of opposition politicians including Ramon Muchacho, mayor of the wealthy Chacao district of capital city Caracas.

Muchacho appeared in a video shot from a secret location after the court removed him from office and sentenced him to 15 months in prison on Tuesday for failing to halt anti-government protests in his district.