A Hamas-Egypt committee was formed to investigate Sinai's Rafah attack that resulted in the death of 16 Egyptian police and army men, London's Hayat newspaper reported sources as saying.
A senior official from Hamas's interior ministry is representing Hamas in the committee while a senior official from Egypt's intelligence is representing the Egyptian authorities, the sources said.
The sources added that so far investigations have revealed that no Palestinians were involved in the horrid incident.
The sources insisted that investigations are ongoing to learn the identity of the six assailants killed by Israeli forces in light of the attack.
Egypt's authorities are currently awaiting DNA records to learn if Palestinians were involved.
Meanwhile, Hamas urged Egypt's authorities to open the Rafah border permanently, expressing appreciation for having it open for the past three days for critical cases.
Egyptian authorities reopened the Rafah border yesterday, into and out of Gaza, for Palestinian travelers, after initially ordering it closed following the clashes in Sinai.