The three suicide bombers who killed more than 40 people in an attack on Istanbul's main airport were all from parts of the former USSR.

Officials gave the men's nationalities as Russian, Uzbek and Kyrgyz on Thursday after police detained 13 people, including three foreigners, in raids across Istanbul.

Arrests were also made coastal city of Izmir, where at least nine people were detained on accusations of financing, recruiting and providing logistical support to Isis.

Turkey’s Ataturk Airport reopened for Business

Turkish authorities believe Isis was behind the bombing and shooting attack, when three militants detonated explosives and fired at passengers with AK-47s outside the airport entrance and inside the departures terminal.

The pattern followed a series of attacks carried out by Isis in recent months, including at Brussels airport and in Paris.

Recruits from predominantly Muslim areas of the former Soviet Union have been featured prominently in Isis propaganda videos and Vladimir Putin estimated that there are up to 7,000 militants from the region in the terror group’s ranks.

The death toll from Tuesday’s attack at Ataturk airport rose to 43 people after a Palestinian woman in her twenties, Sondos Shraim, died of her injuries.

The Palestinian Ministry of Foreign Affairs said she was from the West Bank town of Qalqilya and had travelled to Istanbul with her husband and three-year-old child for Ramadan.

Attack at Ataturk International airport in Istanbul Show all 20 1 /20 Attack at Ataturk International airport in Istanbul Attack at Ataturk International airport in Istanbul A mother of victims reacts outside a forensic medicine building close to Istanbul's airport AFP/Getty Images Attack at Ataturk International airport in Istanbul Broken windows are pictured at the attacks and explosions site in Ataturk airport's international arrivals terminal AFP/Getty Images Attack at Ataturk International airport in Istanbul Bullet impacts are pictured at Ataturk airport AFP/Getty Images Attack at Ataturk International airport in Istanbul Police officers patrol at Istanbul Ataturk airport Reuters Attack at Ataturk International airport in Istanbul Workers clean the debris from the blasts at Istanbul Ataturk airport Getty Images Attack at Ataturk International airport in Istanbul A wounded girl from the Ataturk Airport suicide bomb attack is transported to the Bakirkoy Sadi Konuk Hospital Getty Images Attack at Ataturk International airport in Istanbul Passengers embrace outside Ataturk airport`s main entrance in Istanbul AFP/Getty Images Attack at Ataturk International airport in Istanbul Medics carry wounded people to a hospital after a suicide bomb attack at Ataturk Airport in Istanbul EPA Attack at Ataturk International airport in Istanbul Relatives of the Ataturk Airport suicide bomb attack victims wait outside Bakirkoy Sadi Konuk Hospital Getty Images Attack at Ataturk International airport in Istanbul A Saudi tourist who survived the Ataturk Airport suicide bomb attack waits for his wounded mother outside the Bakirkoy Sadi Konuk Hospital Getty Images Attack at Ataturk International airport in Istanbul A Turkish riot police officer patrols Ataturk airport`s main entrance in Istanbul Ozane Kose/AFP/Getty Images Attack at Ataturk International airport in Istanbul Passengers wait at Ataturk airport`s main enterance in Istanbu, after two explosions followed by gunfire hit Turkey's largest airport Ozan Kose/AFP/Getty Images Attack at Ataturk International airport in Istanbul Forensic police work the explosion site at Ataturk airport Ozane Kose/AFP/Getty Images Attack at Ataturk International airport in Istanbul Passengers leave Istanbul Ataturk, after a suicide bomb attack Getty Attack at Ataturk International airport in Istanbul Armed security man escorts people from a car park at Istanbul Ataturk airport REUTERS Attack at Ataturk International airport in Istanbul Armed security walks at Istanbul Ataturk airport Murad Sezer/REUTERS Attack at Ataturk International airport in Istanbul Ambulance cars arrive at Istanbul Ataturk airport Osman Orsal/REUTERS Attack at Ataturk International airport in Istanbul An ambulance arrives at the Ataturk airport REUTERS Attack at Ataturk International airport in Istanbul The weapons used in the attack REUTERS Attack at Ataturk International airport in Istanbul Passengers leave Istanbul Ataturk, after a suicide bomb attack Getty

Her friend Nisreen Melhim, 28, was also killed, while Ms Melhim's husband and three-year-old daughter were wounded.

The Turkish Interior Minister, Efkan Ala, told parliament 19 foreign nationals were among the victims. The death toll excludes the three suicide bombers.

Out of the 238 who were wounded, 94 remain in hospital, the Istanbul Governor's office reported.

The European Union has said it still wants Turkey make changes to its anti-terrorism laws that EU officials say are used to muzzle dissent – a stance rejected by Turkish officials in the wake of a series of attacks.

A Turkish police officer stands guard as people walk past near the explosion site on Wednesday at Ataturk airport (OZAN KOSE/AFP/Getty Images) (AFP/Getty)

“New demands directed at Turkey, that would encourage the terrorists,” Foreign Minister Mevlut Cavusoglu said.

“We can't make any changes in our terrorism laws. Tomorrow maybe, when conditions change.”

He and other high-ranking officials from Ankara were at EU headquarters to resume negotiations on their country's application to join the European Union.

As part of a deal to continue the controversial system seeing migrants whose asylum claims fail deported from Greece to Turkey, the EU wants Turkey to narrow its legal definition of terrorism and amend other laws to bring them in line with its standards.

Dutch Foreign Minister Bert Koenders, whose country holds the revolving EU presidency, indicated the bloc's position remains unchanged following the attack at Ataturk airport.

“We cannot have our agenda being decided by terrorists. We have an agreement with Turkey, we're working on the benchmarks, and that will continue,” he said. “And I hope we come to an agreement.”