Two Palestinians have been killed in Israeli air raids in the Gaza Strip, medics and security sources say. Another person has been critically injured.
The Israeli army launched three raids in the south of Gaza on Saturday after Palestinian fighters fired a rocket over the border.
The flare-up of violence on the Israel-Gaza border came just two days after the relaunch of Israeli-Palestinian peace talks in the US.
Israeli aircraft reportedly struck targets including smuggling tunnels running under the border with Egypt at Rafah.
The two Palestinians were killed when one of the tunnels collapsed. Three others were wounded.
A raid also struck a former base of the Ezzedeen Al-Qassam Brigades (EQB), the armed wing of Hamas.