Efforts to rescue missing residents continued Wednesday following a 6.4-magnitude earthquake that hit Croatia Tuesday.
Many remain unaccounted for. Officials confirmed at least seven people were killed.
The United States Geological Survey said the most powerful of the tremors - 6.4-magnitude - hit 3 kilometers from the town of Pentrinja on Tuesday at 19:19 hours local time (18:19 hours GMT, 13:19 ET).
The European Mediterranean Seismological Center measured the tremor at 6.3-magnitude. The same area was hit by a 5.2-magnitude earthquake Monday.
Seven people, including a 12-year-old girl, were killed in Petrinja. Around 26 were taken to hospital with six suffering serious injuries. Officials said dozens were missing and likely trapped.
Firefighters, police and the military have been deployed to the worst-hit areas to help with rescues. They continue to find survivors under debris - including a small boy.
"My town has been completely destroyed. We have dead children. This is like Hiroshima - half of the city no longer exists," Petrinja mayor Darinko Dumbovic said.
Petrinja and surrounding villages are without electricity and water. Officials are building temporary shelters for victims. Residents have been told to vacate their homes because of aftershocks.
The military has set up barracks for evacuees. Some will be housed at nearby hotels. Patients at a damaged hospital in Sisak were taken elsewhere in army helicopters and ambulances.
Officials ordered the temporary closing of a nuclear power plant near the area. The plant is near the country's border with Slovenia.
Croatian Prime Minister Andrej Plenkovic has arrived accompanied by other government ministers.
"The biggest part of central Petrinja is in a red zone, which means that most of the buildings are not usable," Plenkovic said.
European Commission President Ursula von der Leyen said it had dispatched personnel to support rescue efforts.
