A rocket fired from the Gaza Strip landed in an open area west of Sderot, the army said late Monday night.

No injuries were reported in the incident, and no organization claimed responsibility in the immediate aftermath of the attack.

According to initial reports, alarm sirens meant to warn residents of rocket attacks did not go off, suggesting the rocket detection system deployed around Gaza calculated that the rocket would land far from populated areas.

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The attack came three days after Gazans fired four rockets at southern Israel late Friday and early Saturday, breaking what had been over a month of tense calm with the Gaza Strip.

All four rockets landed in open areas outside Sderot. There were no injuries or damage.

Following the weekend attacks, Israeli warplanes struck two Hamas military sites. Two children were killed by shrapnel from the explosions, according to Hamas.

Prime Minister Benjamin Netanyahu on Sunday charged that as the ruling power in the Gaza Strip, the terrorist organization is responsible for any rockets fired at Israel from inside the Palestinian territory.

No organization claimed responsibility for Friday’s rocket attacks, which came at around the same time as a shooting attack in the West Bank that left two IDF soldiers lightly hurt.