NEW DELHI: Israeli military strikes across the Gaza Strip killed at least 29 Palestinians, media reports said. 

The sirens blared in southern Israel in response to renewed rocket fire from militants in the Palestinian enclave, as per reports.

The new rocket salvoes indicated that Hamas-led militant factions in Gaza are still able to fire projectiles into Israel despite a year-long Israeli aerial and ground offensive that has turned wide areas of the enclave into wasteland.

The Israeli military said sirens sounded in southern Israel for the first time in around two months.

In Gaza City in north Gaza, Palestinian health officials said one Israeli aerial strike on a house killed at least seven people. Four people including two women and a baby were killed in the bombing of a home in the southern city of Khan Younis.

The rest were killed in airstrikes on several areas across the densely populated coastal enclave. Residents said Israeli forces operating in Gaza City's Zeitoun suburb and Rafah, near the southern border with Egypt, blew up clusters of homes.

Israel's military says Hamas combatants use crowded, built-up residential neighbourhoods as cover but Hamas denies this, media reports said.

Israel media, reporting on the rocket fire, said one rocket was intercepted by air defence and another crashed in an open area. There were no reports of casualties or notable damage.