Crowds gathered to vote in other former “Chavista” strongholds too, such as the poor slums of Caracas.
The opposition coalition said a pro-government “paramilitary” gang opened fire in the poor neighborhood of Catia, where thousands were participating in the referendum.
A 61-year-old woman was killed and three people were wounded, the state prosecutor’s office said.
Mariela Perez, who works in a clinic, said hundreds of people ran into a nearby church when the shots rang out. She said pro-government demonstrators then besieged those inside.
“They started yelling for the priest to come out, that they were going to set him on fire, that this plebiscite was not going to happen,” said Perez,
“It was horrible. We were desperate,” she said. A church official eventually helped negotiate their exit.