Despite an October ceasefire, the Palestinian territory remains gripped by daily violence as Israeli strikes continue, with both the military and Hamas accusing one another of breaking the truce.
Intelligence agencies said that the fresh inputs have raised renewed concerns within the security establishment about evolving patterns of cross-border cooperation among terrorist organisations.
Hamas previously condemned the killing of Ayatollah Ali Khamenei on the first day of the war as a "heinous crime", openly acknowledging his longstanding support for the Palestinian movement.
Under the first phase of a US-sponsored ceasefire in Gaza, the Israeli army withdrew to positions behind a so-called Yellow Line, but still controls over half of the territory.
Hamas recently completed the formation of a new Shura Council of more than 80 members, a consultative body largely composed of religious scholars, as well as a new 18-member political bureau.
