Tel Aviv: More than 100 killed and over 500 others were injured as the Palestinian group Hamas launched the biggest attack on Israel in years on Saturday.
Israel said the Iran-backed group had declared war.
The Israeli military said, in response to Palestinian attacks, it had launched air strikes into Gaza, where witnesses reported hearing heavy explosions.
The attack marked an unprecedented infiltration by an unknown number of Hamas gunmen into Israel from Gaza and one of the most serious escalations in the Israeli-Palestinian conflict in years.
In Gaza, people rushed to buy supplies in anticipation of days of conflict ahead. Some evacuated their homes and headed for shelters.
Hamas military commander Mohammad Deif announced the start of the operation in a broadcast on Hamas media, calling on Palestinians everywhere to fight.
“This is the day of the greatest battle to end the last occupation on earth,” he said, adding that 5,000 rockets had been launched.