By Gulsen Topcu

JERUSALEM

Several Israeli websites on Saturday came under a cyber attack by unidentified hackers, local media reported.

The hackers posted Palestinian flags and pictures of the ongoing demonstrations at the Gaza-Israel border on websites of Israeli municipalities, and public and private hospitals, according to Israel Radio.

On Wednesday, Israeli websites came under a similar attack.

Since Friday morning, thousands of Palestinians have converged on Gaza Strip’s eastern border with Israel to take part in anti-occupation demonstrations.

At least 31 Palestinians have been martyred by the Israeli forces since March 30, when the peaceful demonstrations erupted, according to the Palestinian Health Ministry.

The rallies are part of a six-week demonstration that will culminate on May 15, which will mark the 70th anniversary of Israel's establishment -- an event Palestinians refer to as the "Nakba" or "Catastrophe".

Demonstrators demand that Palestinian refugees be granted the “right of return” to their towns and villages in historical Palestine, from which they were driven in 1948 to make way for the new state of Israel.