According to “Israel National News” Palestinian Authority (PA) security officials have warned that “Islamic State” is acting to mobilize in Gaza to serve as an extension of its activities in the Sinai Peninsula.

Journalist Gal Berger reports that the PA knows of eight extremist Salafi groups operating in Gaza in recent years with several hundred members total.

Many of these are former Hamas members who left the organization.Salafi activity is being compartmentalized into different roles in Gaza and funding is allegedly coming from within.

Hamas sources stated that there are several dozens of Salafi activists who have pledged sole allegiance to ISIS, but added that they "do not pose a serious threat" to stability in the region.

Berger noted that a senior member of the Salafi movement in Gaza, named as Adnan Mitt, was arrested last month. Mitt is a former Hamas member.

Last week, sources stated to Maariv that ISIS is threatening to declare war on Hamas and take over Gaza from within.

But according to SPUNTIC NEWS the Sinai Tribal Federation, comprising some 30 tribes based in the peninsula, pledged to assist the Egyptian security forces in their fight against terrorism and “Islamist insurgency” in the region plagued by violence since 2013.

The tribes are resolved to tackle the deadliest group in the Sinai, affiliated with the ISIS, among other militants.

Sinai Province, previously known as Ansar Beit al-Maqdis (ABM), claimed responsibility for numerous attacks against Egyptian soldiers.

The tribes announced that they would form two volunteer groups. One will fight along the security forces, while the other one will focus on collecting information on suspected militants and their supporters.