A STRONG earthquake has hit central Croatia, causing major damage to homes and other buildings in a town south east of the capital Zagreb.
Authorities said a girl was killed and at least 20 people were injured.
The European Mediterranean Seismological Centre said a magnitude 6.3 earthquake hit 46km (28 miles) south east of Zagreb.
Initial reports said the earthquake caused widespread damage, collapsing roofs, building facades and even some entire buildings.
The same area was struck by a 5.2 quake on Monday and several smaller aftershocks were felt on Tuesday.
Officials said a 12-year-old girl died in Petrinja, a town of some 25,000 people south east of the capital that was hit hardest.
At least 20 people were admitted to hospital with injuries, two with serious ones, they said.
"The centre of Petrinja as it used to be no longer exists," Croatria's state HRT television said in its report.
"One girl died and there are injuries and people inside collapsed buildings."
"My town has been completely destroyed. We have dead children," Petrinja mayor Darinko Dumbovic said in a statement broadcast by HRT TV.
"This is like Hiroshima - half of the city no longer exists."
"The city has been demolished, the city is no longer liveable," he said. "We need help."
Croatian prime minister Andrej Plenkovic and other government ministers arrived in Petrinja after the earthquake.
"They are searching through the rubble to see if there is anyone else there," Mr Plenkovic said.
"The biggest part of central Petrinja is in a red zone, which means that most of the buildings are not usable."
He said the army has 500 places ready in barracks to house people, while others will be accommodated in nearby hotels and other available places.
"No-one must stay out in the cold tonight," the prime minister said.
European Commission president Ursula von der Leyen said on Twitter that she had spoken to Mr Plenkovic and instructed an envoy to travel to Croatia as soon as possible.
As a Mediterranean country, Croatia is prone to earthquakes, but not big ones.
The last strong quake struck in the 1990s when the picturesque Adriatic coast village of Ston was destroyed.
Regional TV channel N1 reported live on Tuesday from Petrinja that a collapsed building had fallen on a car.
The footage showed firefighters trying to remove the debris to reach the car, which was buried underneath.
A man and a small boy were eventually rescued from the car and carried into an ambulance.
Fallen bricks and dust littered the streets, and many houses were completely destroyed.
The Croatian military was deployed in Petrinja to help with the rescue operation.
Croatian seismologist Kresimir Kuk described the earthquake as "extremely strong", far stronger than another one that hit Zagreb and nearby areas in the spring.
He warned people to keep out of potentially shaky, old buildings and to move to the newer areas of the city because of the aftershocks.
In the capital, people ran out into the streets and parks in fear.
Many were reportedly leaving Zagreb, ignoring a travel ban imposed because of the coronavirus outbreak.
The earthquake was felt throughout the country and in neighbouring Serbia, Bosnia and Slovenia.
It was even felt as far away as Graz in southern Austria, the Austria Press Agency reported.
Authorities in Slovenia said the Krsko nuclear power plant was temporarily shut down following the earthquake.
The power plant is jointly owned by Slovenia and Croatia and located near their border.
