According to preliminary information, there are no Armenians among the victims of the blast in Istanbul’s Sultanahmet district, the Armenian Ministry of Foreign Affairs reports.

At least 10 people were killed in an explosion in a district of Istanbul popular with tourists, the city authorities say.

Foreign tourists are reportedly among those hurt in the blast, which occurred in the city’s historic Sultanahmet district, near the Blue Mosque.

Fifteen people were also wounded in the blast, the Istanbul Governor’s Office said in a statement on its website.

Some reports suggest the explosion was caused by a suicide bomber.

Police have sealed off the area and the authorities are investigating the type of explosive used, the governor’s office said.

German media reports say the country’s foreign ministry is investigating reports that German citizens have been hurt in the blast.