Yasser Abu Shabab, head of the anti-Hamas Abu Shabab militia, was killed by assassins in Gaza, Israeli sources confirmed to The Jerusalem Post on Thursday.The self-proclaimed "Popular Forces" of the Gaza Strip, the Abu Shabab militia, had reportedly been collaborating with Israel on anti-Hamas efforts in southern Gaza.Abu Shabab was killed in an internal clan scuffle, rather than by Hamas terrorists, a source confirmed.According to the source, Abu Shabab was initially wounded and was evacuated