<p>Istanbul A 5.0-magnitude earthquake rattled buildings in Turkey's largest city Istanbul on Thursday, sending some people rushing out to the streets, Reuters witnesses and the AFAD disaster agency said.</p><p>AFAD said the tremor centered in the Marmara Sea, southwest of Istanbul, along a faultline long seen as a risk for the city of 16 million people.</p>
<p>Istanbul A 5.0-magnitude earthquake rattled buildings in Turkey's largest city Istanbul on Thursday, sending some people rushing out to the streets, Reuters witnesses and the AFAD disaster agency said.</p><p>AFAD said the tremor centered in the Marmara Sea, southwest of Istanbul, along a faultline long seen as a risk for the city of 16 million people.</p>