A 6.2-magnitude earthquake struck off the coast of Turkey on Wednesday, shaking Istanbul and prompting officials to urge residents to stay outdoors. According to the U.S. Geological Survey, the quake hit the Marmara Sea about 13 miles from the Turkish coast at 12:49 p.m. local time, followed by at least three aftershocks between magnitudes 4 and 5.

A park in Istanbul following an earthquake Wednesday.

The tremors were felt as far as Bucharest and Sofia, over 300 miles away. Though security footage captured people fleeing buildings in Istanbul, Turkish officials reported no damage to roads, airports, or public transport systems. Interior Minister Ali Yerlikaya said field scans have begun, while some shops in the city temporarily closed after the shaking.

Turkey, located at the convergence of the Eurasian, Arabian, and African tectonic plates, remains highly vulnerable to seismic activity. The quake comes just over a year after a catastrophic 7.8-magnitude earthquake in 2023 killed around 60,000 people across Turkey and Syria.