Daesh terrorists are believed to be targeting Jewish children in Turkey, with an attack expected in the next few days.

According to Sky News, Turkish authorities have obtained intelligence that an incident is “imminent”, with the most likely target a school and community centre at a synagogue in the Beyoglu district of Istanbul.

The information is said to have come from six Daesh operatives who were arrested in the Turkish city of Gaziantop.

"In light of these circumstances, extraordinary security measures are being taken above and beyond the high alert level already in place by the Turkish police, as well as vigilance within the Jewish community," an intelligence source told Sky News.

"Undercover and other covert counter-terror measures are being implemented around the clock.

"This is a more than credible threat. This is an active plot.

"We don't know when it's scheduled for. It could be in the next 24 hours or next few days."

The threat comes after the suicide bombing in central Istanbul earlier this month, which killed five people, including four Israelis.

Istanbul's Beyoglu district is home to the Neve Shalom synagogue, the city's largest shul.