At least 12 people were killed and 522 others injured when a magnitude 6.6 earthquake jolted the city of Izmir on the Turkish Aegean on Friday, environment and urbanization minister said. Eurasia Diary report citing Anadolu Agency.

At least 144 aftershocks, with 21 of them more powerful than magnitude 4.0, were recorded after the quake, Murat Kurum told a news conference.

"1,227 search and rescue teams are operating in the field," Kurum said.

He added that eight injured people were in intensive care, while five others are in surgery.

The Disaster and Emergency Management Authority (AFAD) said the quake occurred at 2.51 p.m. local time (1151GMT) at a depth of 16.54 kilometers (around 10 miles).

The agency noted that among the fatalities was a person who drowned following the quake.

Earlier, Izmir Governor Yavuz Selim Kosger said that the earthquake triggered a partial tsunami in the coastal district of Seferihisar, which left at least one person injured.

So far 70 people have been rescued from the debris, according to the governor.

Search and rescue work continues around 17 destroyed and damaged buildings in the city of some 4.37 million – Turkey’s third-largest city by population.

Over 50 vehicles and nearly 200 rescue workers were dispatched to the scene, AFAD added.

The Turkish Red Crescent also sent 48 staffers, 16 vehicles, and three mobile field kitchens which have the capacity to serve over 25,000 people.

Also, 960 disaster tents, 4,500 blankets, 3,672 beds were dispatched to the region, the disaster management agency added.

It also said emergency aid of 5 million Turkish liras (around $600,000) was sent to the region by the Family, Labor and Social Services Ministry.

Later, AFAD said that another earthquake, magnitude 5.1, hit the Aegean Sea, 20 kilometers (12.4 miles) off the Kusadasi district of Turkey's Aydin province.