Palestinians inspect a destroyed Hamas site after it was targeted by an Israeli air strike in Gaza City. File photo/Reuters

Israel said on Thursday its aircraft struck a Hamas military site in the Gaza Strip overnight after balloons carrying firebombs and explosives were launched from the Palestinian enclave.

Following the airstrike, Israel's military said there had been two “launches” — likely rockets — from the Gaza Strip toward Israel.

No further details on the launches were immediately available.

The airstrike hit targets within what Israel's army called a Hamas military compound in the northern Gaza Strip. There had so far been no reports of injuries.

It was unclear if the firebombs and explosives that prompted it caused any damage within Israel.

An Egyptian and UN-brokered ceasefire between Israel and Hamas, the Islamist movement that runs the Gaza Strip, had led to relative calm around Israel's April 9 election.

But on Tuesday, Israel reduced the offshore fishing limit it imposes for vessels operating out of the blockaded strip after a rocket was fired from the territory by Palestinian activists.

The rocket fell into the Mediterranean. Israel's military blamed the launch on Islamic Jihad, which is allied to Hamas.

Israel and Palestinian activists in Gaza have fought three wars since 2008.

Agence France-Presse