At least seven people are known to have died in a magnitude 6.4 earthquake that struck central Croatia on Tuesday.
Rescue teams spent the night scouring the rubble of damaged buildings in the search for survivors.
A 12-year-old girl was killed in Petrinja, the prime minister said as he visited the town.
Five people died in the nearby town of Glina, his deputy said. A seventh victim was found in the rubble of a church in Zazina, state media reports.
Petrinja’s mayor said that about half the town had been destroyed and people had been pulled from the rubble.
Many were too afraid to return to their homes overnight in case aftershocks caused more damage, officials said. Some people slept in their cars or stayed with relatives in other areas. About 200 people sheltered in a military barracks.
EU crisis management chief Janez Lenarcic is due to visit Petrinja on Wednesday.