Palestinians fired an antitank missile at an IDF force moving along the border fence south of Karni crossing in the northern Gaza Strip on Friday.
There were no reports of damage or injury, and the force did not respond to the source of the fire.
Earlier Friday morning, a false alarm sounded in Sderot and the surrounding area, after the alert system misidentified a rocket launch on the western Negev.
Thursday morning, a Color Red siren also sounded in a number of communities in the western Negev, but turned out to be a false alarm as well, and no rocket was fired at Israel.
On Tuesday, after ten days of quiet, rocket attacks on Israel were resumed, and a rocket fell within the Ashkelon Coast Regional Council.
No one was injured and no damage was caused in the attack.
Since the end of Operation Cast Lead in the Gaza Strip, some 100 rockets and mortar shells were fired at the western Negev.