Along with the airstrikes, Israel responded to Saturday's rocket fire by closing the Kerem Shalom crossing with Gaza.

NPR: Israel Responds To Gaza Rocket Fire With Airstrike

Israeli security officials said they had intelligence warnings of a possible attack in the area, and the nearby Kerem Shalom crossing point for cargo between Gaza and Israel was closed for several days last week.

NPR: Palestinian Attack, Kidnapping Angers Israel

The 10 EU monitors left the terminal and waited at the Israeli-controlled Kerem Shalom border crossing for calm to be restored, he said.

CNN: Gaza crossing to reopen after protest

's aid is stuck at the Kerem Shalom border crossing because the private company that drives the aid in is refusing to enter Gaza "because the situation is too dangerous, " U.N.

CNN: Israeli strike kills at least 1 aid worker, U.N. says