According to Aljazeera, police helicopter has dropped grenades on Venezuela's Supreme Court building and fired shots at the interior ministry in what President Nicolas Maduro called a "terror attack" against his government.
However, Information minister Ernesto Villegas said the stolen helicopter first fired 15 shots on the ministry in Caracas, the capital, as a reception was taking place on Tuesday.
But, it then flew a short distance to the Supreme Court building and dropped four grenades, two of them near the national guardsmen protecting the building.
President Maduro said no one was injured as the grenades failed to detonate during the incident.
The attack occurred as Maduro was speaking live on state television to journalists gathered at the presidential palace.