As Russia has detained eight commercial ships flying Turkish flags in the Black Seasince the jet crisis erupted between the two countries, Turkey has detained a total of 27 Russian ships in a retaliatory move, as reported by daily Habertürk on Dec. 16, the Hurriyet Daily News reports.

According to the source, Turkish officials have detained a total of 27 ships with Russian flags as of Dec. 15 due to missing documents or transactions in line with the Mediterranean and Black Seamemoranda.

Authorities from both countries have started to discuss the issue via e-mail, and Russia has given Turkey green light to talk about the issue.

“It is not clear where or when to meet. The parties have showed their intention to overcome the issue,” sources said.