Melih Gökçek the mayor of Ankara in Turkey has implied that yesterday’s 6.2-magnitude earthquake in the Aegean Sea, off the coasts of Greece and Turkey, was artificially caused by foreign powers, according to Hurriyet Daily News.

Gökçek tweeted: “Now I think that this might be an artificial earthquake. I do not say it is certain but it is a very serious possibility.”

1️⃣2️⃣BU SURETLE SUNÎ DEPREMİ YAPAN DİŞ GÜÇLER DİKKATİ ÜZERLERİNDEN ATACAKTIR… — İbrahim Melih Gökçek (@06melihgokcek) June 12, 2017

“I say that it should definitely be investigated. Was there any seismic research ship sailing near the epicentre? If so, which country does it belong to?” he continued.

This is not the first time that the mayor has suggested that earthquakes have been triggered artificially.

In February this year, he hinted that an earthquake in Çanakkale, northwestern Turkey, had been caused by external powers in order to crash the county’s economy.