The joint operation involved 9 Russian attack aircraft and 8 Turkish warplanes.
The two-day meeting is aimed at extending the ceasefire in war-torn Syria.
The suspects allegedly used the encrypted Bylock messaging system which was used by coup plotters.
Abdulgadir Masharipov has been accused of killing 39 people at Istanbul's Reina nightclub on New Year's Day.
Selahattin Demirtas was arrested by security services in November 2016.
It is a great honour for camel owners to have their animal enter the Selcuk Camel Wrestling Festival, and they will spend all year preparing.
Turkey recently threatened to attack Manbij, currently under Kurdish-led Syrian Democratic Forces' control.
Syria has been ravaged by a civil war between anti-government rebel forces and the Assad regime.
Ruling, and opposition lawmakers, threw punches and shoved one another.
The unprecedented discovery reveals details of the history of maternal health in the Byzantine era.
Wanted individuals captured from Isis and sold through Turkey can fetch a minimum of $50,000.
The emergency was extended on 3 January following the Istanbul nightclub massacre.
Two were killed in the attack outside a couthouse in Turkey's third largest city.
Police shot dead two attackers in clashes following the blast.
Three families were arrested in Izmir as part of the investigation into the attack.
Under the emergency rule, security forces can arrest terror suspects for up to 30 days without charges.
The pair exchanged barbs online after a tweet by Allen sparked a volatile discussion.
The US-led coalition backs the Kurdish forces in Syria who are advancing against Isis-held Raqqa.
The police released images of the suspect on 2 January as the manhunt continues.
Free Syrian Army groups will not attend peace talks in Kazakhstan despite ceasefire largely holding.
He was convicted 40 years ago of using diplomatic status to smuggle arms to Palestinian militants.
Gunman not believed to be among those detained.