Turkey announced that it is preparing a case in the European Court of Human Rights (ECHR) over Greece’s treatment of migrants following the mass influx of migrants to the Turkish-Greek borders.

Turkey’s Interior Minister, Suleyman Soylu, announced the decision on broadcaster CNN Turk on Wednesday after Ankara accused Greek forces of shooting dead a migrant and injuring others.

Soylu said that Turkish officials “are making preparations” to file a complaint to the ECHR over Greece’s interventions with the migrants, adding that the families of the migrants who died at border crossings authorized them to take action.

Turkish officials said that Greek authorities fired tear gas at migrants to stop them from crossing.

Athens refutes the claims, arguing that Turkish police facilitate illegal migrant crossings into Greece.

Turkish President Tayyip Erdogan opened Turkey’s borders with the EU after a Syrian regime ariel operation killed 33 Turkish soldiers in Idlib on February 27.

According to Soylu, more than 135,000 migrants have left Turkey for Greece since Saturday. Greece did not confirm the figure but reported that it has thwarted more than 27,000 migration attempts and arrested 220 people who have managed to cross into the country.

On March 3, a delegation of EU officials circled over the Turkish-Greek borders in a helicopter. Following their inspection tour, the EU announced plans to grant Greece €350 million in emergency funding to assist it in managing the border crisis by dispatching six patrol vessels, two helicopters, and additional security personnel to Greece.

“Our first priority is making sure that order is maintained at the Greek external border,” said European Commission President Ursula von der Leyen. 

After the EU announced its financial assistance to Greece, Erdogan met separately with European Council President Charles Michel and the US ambassador to the UN, Kelly Craft.

Turkish Foreign Minister Mevlut Cavusoglu and EU Foreign Policy Chief Josep Borrell attended the two-hour meeting between Michel and Erdogan.

The Turkish FM also attended Erdogan’s meeting with the US ambassador to the UN.

The Turkish president is now meeting with Russia’s President Vladimir Putin in Moscow, with aims to reach a ceasefire agreement amid escalating tensions between Turkish and Syrian government forces in Idlib.