Israel has for more than a decade imposed a crippling blockade on Gaza, fighting three wars with Islamist movement Hamas since 2008.
The pictures have also been released to authorities at all the country's exit points.
Malaysian police have released facial composite sketches of two men suspected of killing a Hamas member in Kuala Lumpur. Israel dismissed the charge.
"We have experts who compiled the photo-fits based on eyewitnesses but we can not reveal much about those who spoke to us", he told reporters at a rank-pinning ceremony at the Police Training Centre (Pulapol) here on Monday.
He added that the suspects were believed to be riding BMW GS and Kawasaki Versys motorcycles. Both are carrying backpacks and have on dark jackets and helmets.
Human Capital Unit head, Arafiah Aman said they were still waiting for the Egyptian Government's approval for the process.
"We will send some of the bullets collected to our analysis experts to determine what kind of weapon was used in this heinous killing", Mohamad Fuzi said.
Tens of thousands of Palestinians in the coastal enclave, wedged between Israel, Egypt and the Mediterranean, have gathered at the border on consecutive Fridays to call for Palestinian refugees to be allowed to return to their former homes now inside Israel. Most of the 40 Palestinians killed by Israel since the start of "March of Return" protests on March 30 were shot by snipers on the border, while a few others were killed by Israeli artillery or air strikes.
Mossad has been accused of several high-profile killings involving Palestinians around the world, although Israel has consistently denied the accusations.
Hamas, a militant group sworn to Israel's destruction, described al-Batch as a "commander" in its military wing and accused Israel of assassinating him.
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