Gaza City, July 21 (RHC)-- At least one hundred Palestinians have been killed in Israeli attacks on the besieged Gaza Strip in one day.

According to local reports on Sunday, as many as 66 Palestinians were killed in the Shujaiya neighborhood alone, located in eastern Gaza City.

Medical authorities called the killings in the area a "massacre," saying they have never seen such a level of violence before. The Israeli regime forces also killed dozens of others in other areas in the besieged enclave on the same day.

According to figures provided by emergency services, the total number of people killed since the beginning of the Israeli operation on July 8th now stands at more than 500. At least 3,000 people have also been wounded in the attacks, and sources say more than half of the victims are women and children.

Medics are warning of a serious humanitarian crisis in Gaza as hospitals are running out of basic medical supplies.

The Palestinian Authority has declared three days of national mourning following Israel's brutal shelling.

Meanwhile, Palestinian resistance fighters say they have captured an Israeli soldier, as the Israeli regime continues its offensive in the blockaded enclave.

On Sunday, the Ezzeddin al-Qassam Brigades, the armed wing of the Palestinian resistance movement Hamas, said the name of the captured soldier is Shaul Aron. The Israeli regime has not confirmed the capture of the soldier yet.

Referring to the silence of Israel over the report, Abu Ubaida, a spokesman for the military wing of Hamas, said: "The fact that they did not announce (the loss of the soldier) shows that they were trying to hide their losses." The news of capturing the Israeli soldier reportedly sparked celebrations in Gaza.

Al-Qassam Brigades says Palestinian resistance fighters have killed at least 32 Israeli soldiers since Saturday.