Rescue teams scoured Afghanistan’s mountainous east for survivors, as the death toll from a strong earthquake rose to 900 with 3,000 people injured, an official said Tuesday, AP reports.

The 6.0 magnitude quake struck late Sunday night in several provinces, flattening villages and leaving people trapped under rubble for hours. It damaged or destroyed thousands of homes that were made mostly of mud bricks and wood.

“The injured are being evacuated so these figures may change significantly,” Yousaf Hammad, a spokesman for Afghanistan’s National Disaster Management Authority, told AP. “The earthquake caused landslides in some areas, blocking roads, but they have been reopened, and the remaining roads will be reopened to allow access to areas that were difficult to reach.”