A Turkish member of the Islamic State militant group was responsible for Saturday, March 19's suicide bombing in Istanbul that killed three Israelis and an Iranian, Turkey's interior minister said, according to Reuters.

The attack in Istiklal Street, Istanbul's most popular shopping district, is the fourth such bombing in Turkey this year and the second one by Islamist militants. In January a suicide bomber blew himself up in Istanbul's historic heart, killing 12 German tourists.

Interior Minister Efkan Ala identified Saturday's bomber as a man from a southern Turkish province, adding that five people had been detained so far in connection with the blast.

"We have determined that Mehmet Ozturk, born in 1992 in Gaziantep, has carried out the heinous attack on Saturday in Istanbul. It has been established that he is a member of Daesh," Ala told a news conference broadcast live on television, using an Arabic acronym for Islamic State.

Israel has confirmed that three of its citizens died in the blast. Two of them held dual citizenship with the United States. An Iranian was also killed, Turkish officials have said.

Israeli Prime Minister Benjamin Netanyahu has said Israel is trying to determine whether its citizens were deliberately targeted. Eleven of the 36 wounded were Israelis.

In his first public appearance since the bombing, President Tayyip Erdogan said Turkey would not give in to militants.