
The death toll roseto five in an Israeli retaliatory strike in the Gaza Strip on Sunday, news agency AFP reported.
The Gazan health ministry identified the man killed as Hamad al-Khodori, 34. Hamas's armed wing claimed him as one of its commanders.
Gaza militants on Saturday fired some 250 rockets at Israel, which responded with strikes as a fragile ceasefire again faltered in an escalation.
The latest flare-up came with Hamas, the Islamist movement that rules the blockaded Gaza Strip, seeking further concessions from Israel under the ceasefire.
Israel said around 250 rockets were fired from the Palestinian enclave and its air defences intercepted dozens of them.