TIRANA, Albania — A strong earthquake shook Albania early Tuesday, killing at least 14 people, injuring 600 and collapsing buildings.

The U.S. Geological Survey said the magnitude-6.4 quake, which struck just before 4 a.m., had an epicenter 19 miles northwest of the capital, Tirana, at a depth of 12 miles. Scores of aftershocks included three with preliminary magnitudes of between 5.1 and 5.4.

The quake collapsed at least three apartment buildings while people slept, and rescue crews were working to free people believed trapped in the rubble. There was no indication as to how many people might still be buried in the rubble.

Albanian President Ilir Meta said the situation in the town of Thumane, closest to the epicenter, was “very dramatic.”

Emergency personnel work near a damaged building in the town of Thumane. Florion Goga / Reuters

"All efforts are being made to take the people out of the ruins,” he said, and called on the Cabinet to request international assistance.

Prime Minister Edi Rama said neighboring Kosovo was sending an emergency team to help with rescue efforts.

The bodies of three people were removed from a collapsed building in the coastal city of Durres, 20 miles west of the capital Tirana, the Defense Ministry said. Another two people were found dead and removed from the rubble of a building in Thumane, while one person died after jumping from his home to escape shaking from the quake in Kurbin, 30 miles north of the capital.

All government agencies are on alert and "intensively working to save lives at the fatal spots in Durres and Thumane," Rama said.

“It is a dramatic moment where we should preserve calm, stay alongside each other to cope with this shock,” he wrote on his Facebook page.

The quake was felt along the Albanian coast.

Authorities reported scores of aftershocks and called on people in the most affected areas to stay out of their homes and avoid driving in the affected areas to allow emergency vehicles free access. Many reported seeing cracks in their apartment walls.

At least three apartment buildings and the power distribution station were damaged in Thumane.

An earthquake in September in roughly the same area damaged hundreds of homes.