A Syrian suicide bomber is believed to have carried out the deadly attack on a historic central square in Istanbul that killed at least 10 people and injured 15 more, including foreign tourists, Turkish President Recep Tayyip Erdogan said.

#Sultanahmet meydan patlama pic.twitter.com/stwdSuDZPm

— HAKAN DOGAN (@HAKKODO) January 12, 2016

At least six German citizens, one Norwegian and one Peruvian were injured in the blast, Dogan reported. Norway’s Foreign Ministry later confirmed that one Norwegian citizen was injured in the blast and is receiving treatment at a local hospital.

“It’s not a life-threatening injury,” Norwegian Foreign Ministry spokeswoman Guri Solberg said.

There was a group of German tourists on the square at the time of the blasts, an official from a tour company told Reuters on condition of anonymity.

The explosion took place on Sultanahmet Square. It occurred close to the Sultanahmet tram stop and Dikilitas, the Obelisk of Theodosius, in the heart of Istanbul’s tourist district.

Turkish President Recep Tayyip Erdogan said a Syrian suicide bomber is believed to be responsible for the deadly attack.

“I condemn the terror incident in Istanbul assessed to be an attack by a suicide bomber with Syrian origin. Unfortunately we have 10 dead including foreigners and Turkish nationals… There are also 15 wounded,” Erdogan said.

Istanbul authorities are investigating the incident and the type of the explosives used in the blast, the governor’s office said.

The suicide bomber was identified as a Syrian born in 1988, Deputy Prime Minister Numan Kurtulmuş said during a press conference, adding that most of the victims of the blast are foreigners.

Erdem Koroglu, who was working at a nearby office at the time of the explosion, told NTV he saw several people lying on the ground following the blast.

“It was difficult to say who was alive or dead,” Koroglu said. “Buildings rattled from the force of the explosion.”

One woman who works at a nearby antiques store told Reuters that the explosion was very loud.

“We shook a lot. We ran out and saw body parts,” she said.

“I started running away with my daughter. We went into a nearby building and stayed there for half an hour. It was really scary,” a German tourist named Caroline told AFP.

“We’re taking precautions against a second explosion,” a police officer said.

Shortly after the blast, Turkish authorities slapped a media ban on covering it, Anadolu news agency said.

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