By Gozde Bayar
ANKARA (AA) – A powerful earthquake struck the Turkish metropolis Istanbul on Thursday, according to Turkey’s quake monitoring center.
The Kandilli Observatory said that the earthquake with magnitude of 5.7 hit the Sea of Marmara at 1.59 p.m. (1059GMT).
The earthquake, off Istanbul's Silivri district, occurred at a depth of 11.9 kilometers (7.3 miles).
On Tuesday, a 4.6-magnitude earthquake also hit off Silivri, according to Turkey's Disaster and Emergency Management Authority (AFAD).