The Gaza Strip health ministry says the Israeli military has killed two Palestinian militants.
The Israeli military says a helicopter gunship on Sunday attacked militants trying to plant an explosive device in southern Gaza, along the border where soldiers patrol.
A recent flare-up along the border has threatened the calm that has largely held since Israel invaded Gaza two years ago to try to stop years of Palestinian rocket fire.
On Saturday, Gaza's militant Hamas rulers warned they would escalate hostilities against Israel if tensions don't subside along the Gaza-Israel border.
Over the past week, Gaza militants fired 30 rockets into southern Israel, causing no serious injuries.
Israel hit back with multiple airstrikes aimed at Hamas facilities.Reuse content