Israeli air strikes on Gaza may have halted, and a prisoner exchange between Israel and Hamas is ongoing, but tucked behind the headlines, tensions are brewing in Gaza between Hamas and armed groups.

On Sunday, clashes erupted between an armed clan and Hamas security forces, killing at least 27 people, including eight members of Hamas, according to the Ministry of Interior in Gaza.

Caught in the crossfire was 28-year-old Palestinian journalist Saleh Aljafarawi, who was covering clashes in Gaza City’s Sabra neighbourhood between what security sources told Al Jazeera Arabic was an “armed militia” and Hamas.

Is that the only militia in Gaza? Who are these armed gangs? What are their goals? And are they really affiliated with Israel?

Here’s all you need to know:

Who fought Hamas on Sunday

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