ANKARA, Turkey—A powerful 7.8 magnitude earthquake hit southern Turkey and northern Syria early Monday, toppling buildings and killing at least 568 people. With hundreds injured, the toll was expected to rise as rescue workers searched the rubble in cities and towns across the area.
Rescue workers and residents frantically searched for survivors under the rubble of crushed buildings in multiple cities on both sides of the border. In one quake-struck Turkish city, dozens pulled away chunks of concrete and twisted metal. People on the street shouted up to others inside a partially toppled apartment building, leaning dangerously.
The quake, felt as far away as Cairo, was centered north of the city of Gaziantep in an area about 90 kilometers (60 miles) from the Syrian border….