The strikes followed fierce exchanges over the weekend in which Israeli ground forces killed two Palestinian teenagers in the enclave in cross-border fire.
Defense Minister Avigdor Liberman visited three IDF soldiers injured in the explosion on the Gaza border on Saturday.
Hamas blamed Israel's decade-long blockade on the seaside strip for "Gaza's humanitarian catastrophe", which, it says, has been imposed with "a public US support".
Home to almost two million people, Gaza has been reeling under a decade-long siege that has badly affected livelihood in the Palestinian territory.
The army also reported that a "launch was identified from the Gaza Strip at Israeli territory", with a projectile hitting near a home in a southern Israeli community.
Earlier in the day the army said "two soldiers were severely wounded, one moderately and one slightly" when an improvised explosive device blew up along the border fence with Gaza.
Israeli media said it was the highest number of Israelis wounded in a single incident since the 2014 Gaza war.
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Palestinian security sources said the explosion took place east of the city of Khan Yunis.
The strike is the last of a long series of strikes taking aims at tunnel infrastructure built by Hamas to infiltrate Israeli territory in the South. Israel holds the Islamist Palestinian movement Hamas responsible for any fire coming from the blockaded coastal enclave.
Hamas's armed wing, the Ezzedine al-Qassam Brigades, in a statement said they had fired at the Israeli jets overhead.
ISRAELI jets targeted sites in the Gaza Strip early yesterday after a rocket was sacked into Israel from the coastal enclave.
Palestinians in Gaza Strip attacked the Qatari ambassador Mohammed al-Emadi after his press conference at Dar al-Shifa Hospital in Gaza to announce the details of the Emiri Qatari grant, and they forced him to leave under direct threat to his life.
The U.S. move came amid intense tension with the Palestinians after Trump's decision on December 6 to recognize Jerusalem as the capital of Israel and to cut some $65 million in U.S. aid to the Palestinians.