Masked Palestinian supporters of the Islamic Jihad movement prepare incendiary balloons east of Gaza city, to launch across the border fence towards Israel on June 15, 2021. (MAHMUD HAMS / AFP)

TEL AVIV/GAZA - Israeli aircraft bombed a Hamas site in the Gaza Strip overnight in response to incendiary balloons launched from the Palestinian enclave, Israel's military said on Friday.

Gaza's Islamist rulers Hamas confirmed one of its sites had been struck. Israel's military said it had hit a Hamas weapons manufacturing site. There were no reports of casualties.

Since a May 21 ceasefire ended 11 days of Israel-Hamas fighting, Palestinians in Gaza have sporadically launched balloons laden with incendiary material across the border, causing fires that have burned fields in Israel.

Palestinians say the balloons aim to pressure Israel to ease restrictions on the coastal enclave that were tightened during the May fighting.

Since a May 21 ceasefire ended 11 days of Israel-Hamas fighting, Palestinians in Gaza have sporadically launched balloons laden with incendiary material across the border, causing fires that have burned fields in Israel

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Balloon launches had ebbed after Israel eased some restrictions on Gaza last week. read more But on Thursday, balloons were again launched from Gaza, causing at least four brush fires near Israeli cities along the border.

"In response to the arson balloon fire towards Israeli territory today IDF (Israeli military) fighter jets struck (a) weapons manufacturing site belonging (to) Hamas," the military said in a statement.

Hamas spokesman Fawzi Barhoum called the Israeli strikes a "showy reaction" and said Palestinians were "putting pressure on (Israel), forcing it to respect the rights of our people and to walk back its unjust positions."

Egypt and the United Nations have stepped up mediation efforts over the Israeli strikes and Gaza balloon launches, though the incidents have not led to a broader escalation.

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At least 250 Palestinians and 13 in Israel were killed in the May fighting, which saw Gaza militants fire rockets towards Israeli cities and Israel carry out air strikes across the coastal enclave.