The Palestinian militants on Friday fired a mortar round from Gaza into southern Israel, causing no casualties or damage, the Israeli military said.
The shell landed in an empty field in the southern Eshkol area, a military spokesman told AFP.
A total of 23 mortars and three rockets have been launched at Israel from the Gaza Strip since Sunday, the Army said. One of the rockets struck near a kindergarten in a southern Israeli kibbutz, wounding a teenage girl.
On December 18, Israeli warplanes hit central Gaza, killing five militants as they were about to launch a rocket attack, according to the army and witnesses.
The Islamist movement Hamas that controls Gaza has observed a de facto truce with Israel since the end of a 22-day offensive by the Jewish state on the strip in January 2009 aimed at halting rocket fire from militants.
Attacks have since been considerably reduced, but more than 200 rockets and shells, most of them homemade, have been fired into Israel since early 2010, according to the Israeli military.