An Israeli mobile artillery unit fires towards the Gaza Strip.
A 72-hour Gaza ceasefire period began on Friday, the most ambitious attempt so far to end more than three weeks of fighting between Israel and Palestinian militants in the Hamas Islamist-dominated enclave.
The humanitarian truce, brokered by the United Nations and the United States, went into effect at 8 a.m. (0500 GMT), and was to be lead to talks in Egypt on a longer-term solution.
© Thomson Reuters 2014