DUSHANBE, June 30, 2016, Asia-Plus -- Turkish police have arrested 13 people in connection with the deadly attack on Istanbul''s airport, Turkish state-run media reported Thursday.

Three foreign nationals are among the suspects arrested in Istanbul, the semi-official Anadolu news agency reported.

According to the Associated Press ( AP ), a senior Turkish official says the three suicide attackers who carried out the deadly attack on Istanbul’s main airport were nationals of Russia, Uzbekistan and Kyrgyzstan.

The official on Thursday could not confirm Turkish media reports that the Russian national was from the restive Dagestan region, the AP reported.  

Authorities believe the Islamic State (IS) terrorist group is behind the attack, which killed 42 people and wounded more than 230 people. 

Earlier Thursday, nine suspects linked to the IS terrorist group were arrested in large-scale police raids in the coastal city of Izmir, Anadolu reported.

Police said they found three hunting rifles and documents relating to the extremist group during the searches, according to the agency.

NBC reported Thursday that anti-terror police carried out 16 raids targeting ISIS suspects in Istanbul overnight. 

Meanwhile the Associated Press reported that about 200 people demonstrated in Istanbul on Wednesday.  The demonstrators reportedly said they don''t feel safe after more than a dozen attacks over the past year.