CAIRO/GAZA/JERUSALEM, Jan 5 (Reuters) - U.S. Secretary of State Antony Blinken and Europe's senior diplomat Josep Borrell began a new diplomatic push on Friday to stop spillover from the Gaza war into Israeli-occupied West Bank, Lebanon and Red Sea shipping lanes.

Their Middle East visits came three months since Hamas militants from Gaza attacked Israel, triggering an offensive that has devastated the enclave, uprooted 90% of its population, and killed 22,600 people, according to Palestinian officials.

Israel, which says it has killed 8,000 militants since the deaths of 1,200 people in the Oct. 7 Hamas attack, has announced a more targeted approach under global pressure to limit civilian casualties.

But Gazans said Israeli planes and tanks had intensified attacks overnight on densely populated Al-Maghazi, Al-Bureij and Al-Nusseirat in the centre of the coastal strip.

Some 162 people were killed in the past 24 hours, Palestinian officials said earlier.

In addition to these, Palestinian officials later said that in the south, where hundreds of thousands of Gazans have moved in response to Israeli warnings, at least 22 people were killed by Israeli strikes on Khan Younis.

One Palestinian health official said these included at least 10 people killed and several wounded by an Israeli air strike on a house belonging to Al-Bayouk family.

Four others were killed in an air strike on a street in Al-Nusseirat, Palestinian officials said, while another three died and seven were injured in Israeli shelling on a house in central Gaza's Deir Al-Balah, the Palestinian Red Crescent said.

Separately, medics reported that two more people were killed and others injured in the same central Gaza town after what residents described as fresh Israeli air strikes after dark.

"The Israeli government claims democracy and humanity, but is inhumane," Abdel Razek Abu Sinjar said as he cried over the shrouded bodies of his wife and children killed in a strike on his house in Rafah on the border with Egypt.

In Jabalia in northern Gaza, people picked their way through ruined streets filled with sewage and garbage, video showed. Hunger and deadly diseases are spreading.