Blast interrupts Maduro speech in what Caracas calls a 'failed attack'

Venezuelan President Nicolas Maduro narrowly avoided an explosive attack at a public event. Photo / Twitter

A televised speech by Nicolás Maduro was abruptly cut off, and military men were shown on air running from what the Government called a "failed attack" against the Venezuelan President that left seven soldiers wounded.

But the cause of the blast is being disputed.

At 5.40pm, first lady Cilia Flores looked up and put her hand to her heart, appearing frightened. The image was quickly changed to lines of military men in formation in the centre of Caracas, who seconds later all ran to one side. Maduro's voice could be heard saying "let's go to the right."

Venezuelan President Nicolas Maduro narrowly avoided an explosive attack at a public event. Photo / Twitter

"Explosions were heard," said Communications Minister Jorge Rodriguez an hour later on state TV. "Investigations show clearly that flying artifacts or drones containing explosive material exploded near the presidential stage."

He said Maduro was safe and in a meeting with his Cabinet and top military officials, and that the wounded men were being treated.

"The event is evidence of desperation of ultraright leaders who, being defeated politically, continue to resort to criminal practices, and they have failed once again," Rodriguez said.

The incident took place as an event celebrating the 81st anniversary of the National Guard was about to end, and as Maduro was speaking about the country's economic recovery. The area has been closed off by military personnel.

Venezuela's President Nicolas Maduro watches a military parade in Caracas in May. Photo / AP file

Venezuela is going through a crippling political and economic crisis, with hyperinflation soaring toward 1,000,000 per cent, crumbling hospitals and residents migrating in massive numbers.

AP reports that firefighters at the scene of the explosion are disputing the Government's version of events.

Three officials who spoke on condition of anonymity because they were not authorised to discuss the case say the incident was actually a gas tank explosion inside an apartment.

Smoke could be seen coming out of a building window at the site of the incident.