A devastating earthquake struck Morocco late Friday night, killing over 1,000 people and damaging buildings from villages in the Atlas Mountains to the historic city of Marrakech.

The full scope of the catastrophe was not known as rescuers struggled to get through boulder-blocked roads to the remote mountain villages hardest hit.

State television showed people clustered in the streets of Marrakech late at night, afraid to go back inside buildings that might still be unstable.

On Saturday Morocco’s Interior Ministry reported that at least 1,037 people had died, and another 1,204 people were injured.

In Marrakech, the famous 12th century Koutoubia Mosque was damaged, but the extent was not immediately clear.

The U.S. Geological Survey says Friday night’s earthquake, whose epicenter was in Morocco’s High Atlas mountains, was the strongest to hit the area in over 120 years