This was announced by the head of the Turkish Ministry of Justice Bekir Bozdag, whose words are quoted by TASS.
The prosecutor's office opened a criminal case into the incident.
A warrant has been issued for the detention of five people who work in a restaurant.
According to Governor Aydin Hussein Aksoy, the authorities consider a gas explosion during the replacement of cylinders as the main cause of the emergency.
The explosion killed, according to preliminary data, seven people.