Following Thursday's raids in Istanbul, Turkish authorities have arrested an additional 14 suspects, including 11 foreigners, over their involvement in a terrorist attack on Istanbul's Atatürk airport, CNN Turk reported on Sunday.

That brings the total number of arrests to 27 after 13 people were detained on Thursday in raids across several neighborhoods in Istanbul.

Thirteen suspects, including three foreigners, were referred to Istanbul's Bakirkoy Court on Sunday following medical checks, the report said.

Last Tuesday night, three assailants stormed Istanbul's Atatürk international airport with assault rifles, before detonating suicide vests in several areas including a security checkpoint.

The death toll for the attacks rose to 45 over the weekend, while around 240 people were wounded.

Turkish authorities said the three attackers came from Uzbekistan, Kyrgyzstan and Russia.

Officials blamed the attack on the militant "Islamic State" group, but no one has yet claimed responsibility for the attack.

rs/bk (AP, dpa)