Palestinians mourn relatives killed in the Israeli bombardment of the Gaza Strip outside a morgue in Khan Younis on Sunday. AP

At least 133 Palestinians were killed and dozens of others injured on Sunday, as Israel's air and artillery attacks continued on the Gaza Strip, a Palestinian medical source said.

The source told Xinhua news agency that over Sunday, the bodies of at least 133 Palestinians who died in Israeli strikes were brought to hospitals across the Gaza Strip, 45 of whom were confirmed in Al Aqsa hospital in central Gaza.

Security sources and eyewitnesses told Xinhua that Israeli warplanes launched simultaneous raids on the Nuseirat, Al-Maghazi and Al Zawaida refugee camps in the central Gaza Strip, Xinhua news agency reported.

The sources added that intense raids also took place in the neighbourhoods of Al-Tuffah, Al-Shuja'iya, and Sheikh Radwan in Gaza City and several areas in the northern Gaza Strip.

There was also heavy artillery shelling targeting east of Khan Younis, southern Gaza Strip, amid loud explosions heard in the area, they noted.

An Israeli mobile artillery unit fires a shell towards the Gaza Strip on Sunday. AP

Israeli aircraft carried out a series of violent raids on a stretch of areas south of Khan Younis, with dozens of raids targeting the road between Khan Yunis and Rafah, according to the sources.

Meanwhile, fierce battles continued between Palestinian group Hamas and Israeli forces penetrating from several directions in Khan Younis and Jabalia camp.

On the other hand, the Israeli army published photos of an arrest campaign showing dozens of Palestinians handcuffed and stripped of their clothes during its incursions on the outskirts of the northern Gaza Strip.

Indo-Asian News Service