Israeli strikes across the Gaza Strip killed at least six Palestinians and wounded several others between Thursday and early Friday, Palestinian health officials and local medics said, as a U.S.-based conflict monitor reported that Israeli attacks have reached their highest monthly level since the October cease-fire took effect.

Medical officials said Israeli airstrikes and shelling killed five Palestinians on Thursday.

Two people were killed in an airstrike near Gaza City's Tuffah neighborhood, while another died in Israeli tank shelling in the nearby Zeitoun district.

A separate strike on a tent camp housing displaced families in western Gaza City killed one person and injured several others, and another airstrike targeting a vehicle in Khan Younis killed one more, according to medics.

Witnesses also reported an Israeli strike on a residential building in the Nuseirat refugee camp in central Gaza, damaging several nearby homes.