The Israeli military has carried out air strikes in the Gaza Strip after Palestinian militants in the territory fired rockets at southern Israel.
Six rockets were launched from Gaza at dawn, five of which were intercepted, the military said. Shortly afterwards, Israeli warplanes hit what it identified as two Hamas militant sites.
No-one is reported to have been hurt.
The exchange follows an Israeli raid in Nablus in the occupied West Bank on Wednesday which killed 11 Palestinians.
Both Hamas, which controls Gaza, and another militant group, Palestinian Islamic Jihad, had issued threats of retaliation.
UN Middle East envoy Tor Wennesland, who is attempting to de-escalate the situation, travelled to Gaza on Thursday to meet Hamas leaders, according to Reuters news agency.