Hamas has condemned Israel’s “treacherous and cowardly assassination” of Izzal-din Al-Haddad, who led the group’s Qassam Brigades, in the Gaza Strip, according to Al Jazeera reports.

Hamas says Al-Haddad was killed along with his wife, his daughter and other Palestinian civilians on Friday evening.

It adds that the killing marks the latest Israeli breach of the Gaza “ceasefire” agreement, as well as its “ongoing aggression against innocent civilians” in the enclave.