Turkey’s state broadcaster TRT is reporting 38 people are dead and at least 120 are injured but figures are difficult to ascertain hours after an attack of this kind. The numbers could rise in the forthcoming hours.
Gundogan shared a tweet with the message ‘Stay Strong’ and #PrayForIstanbul.
Turkey has fell victim to a string of terrorist attacks over the past year.
At least 37 people were killed and more than 70 injured after a car bomb struck the Kizilay area of the Ankara in March.
The terrorist organisation PKK is reported to be behind the bombing, security officials said.
The last attack also took the life of the father of Galatasaray striker Umut Bulut tragically lost his life in the bombing.
Gundogan was born in Germany but is part of the large Turkish community which numbers 3-4 million. The 24-year-old’s family originate from the Afyon province in Western Turkey.