Gaza militants fired a rocket at southern Israel on Monday but it landed in open ground in the Negev desert, injuring nobody, the military said.
"A rocket fell in the Shaar Hanegev region; there were no casualties and no damage," a spokeswoman told AFP.
On Thursday, an Israeli air strike killed two Gaza militants, ending a relative lull since the end of October, when cross-border violence killed 12 Palestinians and an Israeli civilian.
Following the Thursday hit, Palestinian fighters fired five rockets at Israel, none of which caused casualties or damage.
In an ensuing Israeli air raid at a militant training ground in Gaza on Friday morning, a father and his 12-year-old son were killed and 10 other civilians injured, after the attack caused a nearby house to collapse.
Palestinians then fired 12 rockets at Israel on Friday, and another four on Saturday, none causing casualties.
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