Videos show buildings collapsing and rescuers in action in Turkey and Syria

A powerful 7.8 magnitude earthquake rocked southeastern Turkey and northern Syria early Monday, toppling hundreds of buildings and killing more than 4,000 people. Hundreds were still believed to be trapped under rubble, and the toll was expected to rise as rescue workers searched mounds of wreckage in cities and towns across the area.

Child rescued from under rubble in Aleppo

Drone footage shows devastation on Turkey's border

Survivor recalls final moment with wife

Moment building collapses after earthquake

Aftermath of deadly earthquake in Turkey

Rescue workers saved an injured child

Family rescued from rubble in Sarmada, Syria

'Hundreds of families' believed to be trapped

Initial scenes of evacuation and first aid

Videos of the devastation

Resue operations underway in Salqin, Syria

Displaced child rescued in Qatma, Syria

Rescue efforts continue