Explosion hits police officers on motorbikes in the capital, Caracas.
Oil-rich South American state faces more political and economic turmoil.
Last statement on the Labour press website relating to the country was in 2014.
There are conflicting reports about the exact death toll since protests began in April – but it is over 100.
Among those targeted are high-ranking military officers, whose US assets have been frozen.
The reworked lyrics of the global hit promotes Venezuela government's plan for a controversial new citizen's assembly.
Students and activists have cut down trees and dragged rubbish and furniture into the streets to form barriers.
US president called Maduro as "a bad leader who dreams of becoming a dictator".
A 61-year-old woman was shot dead while waiting to vote in western Caracas city.
More than 90 people have been killed, hundreds arrested and thousands injured since the unrest began at the start of April.
Maduro and Colombian leader Santos have clashed over Venezuela's economic collapse and other issues.
Under Chavez's successor Maduro, Venezuela is sliding towards dictatorship after years of economic mismanagement.
Fabian Urbina, 17, died of a gunshot wound after being shot in the chest by a member of the National Guard.
Freddie Woodman saves late penalty as Young Lions secure country's biggest international title since 1966.
The government said Neomar Lander, 17, died when a homemade mortar exploded in his hands. Opposition leaders said he was killed by a tear gas canister.
Nelson Moncada's murder comes as the country enters its third month of political unrest.
The medical students, doctors and volunteers of the Green Cross First Aid Brigade have been hailed as heroes.
Julio Borges accused the company of 'making a buck off the suffering of the Venezuelan people'.
Some 57 people have been killed in two months of protests against Nicolas Maduro's government.
The country has the largest stockpile of missiles in Latin America.
Nicholas Maduro's government is under fire over an economy in freefall.
At least three people, including two teenagers, have lost their lives in the state of Tachira in a week.