Ashraf al-Qidra, spokesman for the Palestinian Ministry of Health, said in a statement that Naem Abd al-Aziz Abu Thaher, 36, was shot dead by Israeli forces in eastern Deir al-Balah. Israeli forces had also shelled an area east of Rafah late Saturday.
The attacks came after Israeli media reported that officials had agreed to extend a humanitarian truce for four hours. The truce was initially scheduled to end at 8:00 p.m., but was to be extended until midnight.
There was no formal announcement for the extension of the ceasefire, and Hamas spokesman Sami Abu Zuhri said the resistance movement had not been consulted about the extension.
Meanwhile, al-Qassam Brigades said in a statement that it targeted Tel Aviv with two M75 rockets at 8:40 p.m, 40 minutes after the end of the official ceasefire period.
Gaza fighters also fired retaliatory rockets at Nahal Oz, the statement said.
Minutes after the official ceasefire expired, Israeli media reported that mortar shells hit open areas in Eshkol Regional Council.
Additionally, rocket sirens were heard in various towns in southern Israel.
The Palestinian death toll in Gaza rose to well over 1,000 on Saturday, as search teams recovered bodies from destroyed buildings during the brief ceasefire.
Some 151 bodies were recovered during the 12-hour window, according to the Ministry of Health. More than 6,000 Palestinians have been injured in the offensive.
NTJ/HH