The Disaster and Emergency Management Authority (AFAD) said the quake struck 7 kilometers (4.34 miles) below the surface in Sındırgı district.
Turkey is crossed by fault lines and is prone to earthquakes.
Last October, a powerful 6.6 magnitude earthquake struck the country’s third-largest city, Izmir, killing at least 115 people and injuring more than 1,000 others.
In 1999, a magnitude-7.4 tremor hit the industrial province of Kocaeli, leaving nearly 18,000 people dead and around 45,000 others injured.
Nearly 16 million people were affected and around 200,000 people left homeless.
Hurriyet Daily News