Four people were killed and 20 wounded in a suicide bombing on a central shopping district in Turkey's largest city of Istanbul on Saturday, the local governor said.

Of the 20 wounded, three people were in serious condition, the governor said in a statement. There were three Israeli citizens among the wounded, Turkey's Dogan news agency reported.   A suicide car bombing in the capital Ankara killed 37 people this month. A similar bombing in Ankara last month killed 29 people. A Kurdish militant group has claimed responsibility for both of those bombings.

In January, a suicide bomber killed around 10 people, most of them German tourists, in Istanbul's historic heart, an attack the government blamed on Islamic State.

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