A strong earthquake rattled Istanbul, Turkey, and neighboring regions, sending panicked people pouring into streets but apparently causing no major damage.

A moderate earthquake measuring 6.2 on the Richter scale struck the northwestern region of Turkey on Wednesday, shaking Istanbul and surrounding provinces. The earthquake triggered widespread panic across the city of over 16 million residents.

ISTANBUL (AP) — Many Istanbul residents spent the night outdoors, too fearful to return to their homes, following a strong earthquake and over 180 aftershocks.