Hundreds are dead after a surprise attack by Hamas, prompting Israel to declare a state of war and launch retaliatory strikes

• Live: Hamas Gaza hideouts will be turned to ‘rubble’, Netanyahu says

Israel and the occupied Palestinian territories are reeling after the Palestinian Islamist group Hamas launched the biggest attack on the Jewish state in 50 years. Hundreds are dead after a surprise attack on the morning of a Jewish holiday and Israel has declared a state of war.

Here is what we know so far:

Israeli forces continued to battle Hamas fighters on the streets of southern Israel on Sunday and launched strikes that levelled buildings in Gaza, more than 24 hours after the Palestinian militant group launched a surprise and unprecedented incursion into Israel – the deadliest in decades.

At least 600 Israelis were killed, including 44 soldiers, and more than 2,000 wounded, Israeli media reported.

At least 370 Palestinians were killed, including 20 children, and 2,200 wounded as a result of airstrikes in Gaza since Saturday, the Palestinian authority said. Seven people were also killed by Israeli army fire in the West Bank.

Israeli prime minister Benjamin Netanyahu said the country was at war and would exact a heavy price from its enemies. Hamas leaders said they were prepared for further escalation.

Israel military officials said “hundreds of terrorists” had been killed and dozens captured as the fighting continued on Sunday.

Israeli military said a “substantial” number of civilians and soldiers had been taken to Gaza and were being held hostage.

In northern Israel, a brief exchange of strikes between Israel and Lebanon’s Hezbollah militant group raised fears of a broader conflict.

In neighbouring Egypt, a policeman shot dead two Israeli tourists and an Egyptian at a tourist site in Alexandria.

The UN security council is due to meet on Sunday after the secretary general, António Guterres, urged “all diplomatic efforts to avoid a wider conflagration”.

Israel will stop supplying electricity, fuel and goods to Gaza, according to a statement from Netanyahu’s office on Saturday night.

The US president, Joe Biden, issued a staunch condemnation of the attacks by Hamas against Israel, saying in an address on Saturday: “The United States stands with Israel”. He issued a statement earlier calling the attacks “horrific” and an “appalling assault”.

Boy, 16, was killed at entrance to Al-Arroub refugee camp near city of Hebron

Israeli forces shot dead a Palestinian teenager at a refugee camp in the West Bank on Saturday, the Palestinian health ministry said, the latest violent episode to rock the occupied territory.

The ministry identified the teenager as 16-year-old Milad Munther al-Raee. He was killed at the entrance to Al-Arroub refugee camp near the city of Hebron, it said. He was “shot in the back by the occupation [Israeli] bullets”, the ministry said in a statement.

Incident forms part of the worst escalation of violence in the occupied territory for nearly two decades

Two Israelis, reportedly a father and son, have been killed in a suspected Palestinian shooting attack on a car wash in a volatile stretch of the occupied West Bank, the latest outburst of violence in the region.

The Israeli military said it was searching for suspects and setting up roadblocks near the town of Hawara, a flashpoint area in the northern West Bank, which has been the scene of repeated shooting attacks and a rampage by Jewish settlers who set light to Palestinian property.