At least six people have been martyred in Israeli attacks on Palestinians in Gaza in the past 24 hours.

Medical sources in the Gaza Strip say at least six people have been martyred in Israeli attacks against the coastal sliver in the past 24 hours.

Five people were killed and 30 others wounded in a series of pre-dawn Israeli attacks that continued into the early hours of Thursday, AFP Adham Abu Selmiya, a spokesman for Gaza's emergency services, as saying.

Among the killed were two members of the Islamic Jihad Movement identified as Ismail al-Asmar, 34, and Ismail Amum, 65.

Asmar was killed when his vehicle was targeted by an Israeli missile on Wednesday morning in the southern city of Rafah. Amum's body was also found after he was killed in an earlier strike near Deir al-Balah in central Gaza.

Another Jihad activist, 20-year-old Atiya Muqat also lost his life in an Israeli attack on Wednesday evening and a separate attack on Rafah killed a civilian working inside Gaza's underground tunnels across the Egyptian border.

Israel continued its attacks on the beleaguered Gaza Strip on Thursday morning, when its warplanes pounded a sports hall in the northern town of Beit Lahiya, killing a civilian and wounding another 20.

Hours later, a civilian critically wounded in Beit Lahiya died due to the severity of his injuries.