By Adrienne Vogt, Aditi Sangal, Melissa Macaya and Meg Wagner, CNN
From CNN's Abel Alvarado and Jonny Hallam
At least four people have been killed following a huge explosion at the Hotel Saratoga in Havana, Cuba on Friday, according to the Cuban presidency.
"The First Secretary of the Party in Havana, Luis Antonio Torres Iríbar, explains that so far the death of 4 people has been confirmed. Search and rescue efforts continue at the hotel, where people may still be trapped," the Cuban presidency tweeted on Friday.
From CNN's Karol Suarez in Atlanta and Jorge Engels
A preliminary investigation suggests that the huge explosion that destroyed the Hotel Saratoga in Havana, Cuba was due to a "gas leak," the Cuban Presidential Office tweeted Friday, adding that more details would follow shortly.
President Miguel Díaz-Canel Bermúdez is on the scene of the explosion with other officials.
Search-and-rescue efforts continue, and more people may be trapped, the presidency said.
CNN's Patrick Oppmann captured photos and videos of the Havana hotel where there was an apparent explosion.
Multiple floors of the Hotel Saratoga appear to be blown out, with dust from the debris surrounding what remains of the building.
From CNN's Patrick Oppmann in Havana
An explosion rocked Havana, Cuba, on Friday, destroying the Hotel Saratoga. Buses and cars were also destroyed outside the hotel.
It was not clear what caused the explosion in the center of the city.
Eyewitnesses at the scene said that a "massive blast" had occurred.
Cuban police and fire rescue were combing through the rubble looking for survivors.
