A magnitude 6.1 earthquake has struck Turkey’s northwestern province of Balikesir, killing at least one person and causing about a dozen buildings to collapse.

A magnitude 6.1 earthquake struck Turkey ’s northwestern province of Balikesir on Sunday, causing about a dozen buildings to collapse, an official said. At least two people were trapped in the debris of a collapsed building.

Rescue efforts were continuing after the 6.1-magnitude temblor struck in a region that is crisscrossed by fault lines.