Israeli aircraft struck Hamas targets in the Gaza Strip early Friday in response to new rocket fire from the blockaded territory, the army said.
There were no reports of casualties or major damage from the exchange of fire overnight.
This came amid heightened tensions after President Donald Trump released his Mid-East plan, a U.S. initiative aimed at ending the conflict that heavily favors Israel and was rejected by the Palestinians.
Palestinians have called for large protests after Friday prayers, including at a flash-point holy site in Jerusalem that is sacred to Muslims and Jews.
Israel has deployed additional troops to the Gaza border area.
Hamas has over the past year gradually shaped an informal truce with Israel, under which the Jewish state has slightly eased its crippling blockade of the enclave in exchange for calm.
But Israel in November assassinated a senior leader of the Islamic Jihad group in Gaza, sparking a flare-up in which 36 Palestinians were killed. No Israelis died.
Over two days, Islamic Jihad fired some 450 rockets towards Israel, which unusually largely confined its reprisals to Hamas’s more radical ally.
Trump’s Mid-East plan would create a disjointed Palestinian state with a capital on the outskirts of east Jerusalem, beyond the separation barrier built by Israel.
The rest of the Jerusalem, including the Old City, would remain Israel’s capital.
The Palestinians were offered limited self-rule in Gaza, parts of the West Bank and some sparsely populated areas of Israel in return for meeting a long list of conditions.
Hamas has vowed that “all options are open” in responding to the proposal, but is not believed to be seeking war with Israel.
Palestinians have held small, scattered protests in recent days condemning the Trump initiative, and larger demonstrations are expected after Friday prayers, including at the Jerusalem holy site known to Muslims as the Haram al-Sharif, or Noble Sanctuary, and to Jews as the Temple Mount.
