In the wake of an Israeli offensive aimed at crippling Hamas, Gaza's ruling party, Hamas is accusing rival Palestinian faction Fatah of spying for Israel.
In return, some are accusing Hamas of carrying out "punishment shootings" against suspects.
"In this war, we arrested many spies and collaborators, and we will stay continuing to catch these spies and put them in jail and in court," Ehad al-Ghossain, Hamas' Interior Ministry spokesman, told CNN. 
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CNN's Karl Penhaul contributed to this report.
All About Hamas • Fatah Organization • Israel
