After months of threats and pressure tactics, the United States on Saturday bombed Venezuela and toppled authoritarian left-wing leader Nicolas Maduro, who was seized to face trial in New York.

Here's what we know so far:

How did it start?

The first explosions were heard in the capital Caracas and surrounding areas shortly before 2:00 am (0600 GMT), AFP reporters said.

They continued until around 3:15 am.

Images shared on social media showed helicopters silhouetted against the night sky and missiles slamming into targets, creating fireballs and huge plumes of smoke.

Trump said at 0921 GMT on his Truth Social platform that the United States had "successfully carried out a large scale strike against Venezuela" and that Maduro and his wife had been "captured and flown out of the Country."

Top US General Dan Caine said the goal of "Operation Absolute Resolve" was purely to seize Maduro, with airstrikes by jets clearing the way for helicopters used in the capture raid.

Caine said the operation followed months of preparation and training.

More than 150 aircraft were mobilized.

What was hit?

Fort Tiuna, Venezuela's largest military complex, situated in southern Caracas, was among the targets.

The vast base is home to the defense ministry, a military academy and housing units for thousands of troops and their families.

AFP reporters saw flames and huge plumes of smoke rising from the complex. 

At one of the entrances, which was still guarded, AFP reporters saw an armored vehicle and truck pocked with bullet marks.

There was no word yet on casualties.

La Carlota airbase east of Caracas was also targeted.

AFP reporters saw an armored vehicle at the base in flames and a burnt-out bus.

Explosions were also reported in La Guaira, north of Caracas, home to a port and an international airport; the north-central city of Maracay; and Higuerote on the Caribbean coast -- all within 100 kilometers (60 miles) of Caracas.

Are there casualties?

Defense Minister Vladimir Padrino Lopez accused US forces of firing missiles and rockets at residential areas.

It was not possible to immediately confirm that.

Hours after the attacks, the authorities had yet to release casualty figures.

Trump, speaking on Fox News, boasted that no US soldiers had been killed in the operation. He told the New York Post that "many Cubans" who were protecting Maduro "lost their lives," the first indication of casualties from the US strikes in Venezuela.

- What has become of Maduro? - 

The operation brought the curtain down on 12 years of increasingly authoritarian rule by Maduro, who had a $50 million US bounty on his head for alleged drug trafficking.

Trump posted a picture on his Truth Social account of the Venezuelan handcuffed and blindfolded aboard a US naval ship in the Caribbean.

From there he and his wife Cilia Flores were to be sent to New York to be tried on drugs and terrorism charges.

The US leader said he followed the operation to capture Maduro live at his Mar-a-Lago estate "like I was watching a television show."

"He was in a very highly guarded... like a fortress actually," he said.

He said Maduro tried in vain to escape to a safe space.

Caine said intelligence agents had spent months studying how Maduro "moved, where he lived, where he traveleted, what he ate, what he wore, what were his pets."

He said that the 63-year-old Socialist and his wife surrendered without resistance.

Trump said Maduro's deputy, Delcy Rodriguez, was ready to do Washington's bidding, but speaking live on Venezuelan TV Rodriguez defiantly proclaimed Maduro as her country's "only president." 

- What next for Venezuela? -

Trump stunned US allies and foes alike by saying that the United States would "run" Venezuela during an undetermined transitional period.

He indicated that could involve deploying US troops on the ground.

Venezuelan opposition leader, Nobel peace laureate Maria Corina Machado, took to social media to proclaim her country's "hour of freedom has arrived."

Machado, seen as a hero by many Venezuelans for her dogged resistance to Maduro, called for the opposition's candidate in the 2024 election, Edmundo Gonzalez Urrutia, to "immediately" assume the presidency.

Trump brushed aside any expectations Machado herself would emerge as leader, claiming she did not have "support or respect" in Venezuela.