This is a breaking story and updates will be added as they become available.
A Gazan organization by the name of Ahfad al-Sahaba-Aknaf Bayt al-Maqdis claimed responsibility the rocket fire in Israel. The group is affiliated with Salafi groups that identify with the ideology of ISIS, the Islamic State organization, and from time to time it attempts to fire rockets in a challenge of sorts to Hamas, the Islamist organization that governs the Gaza Strip.
Israel responded with airstrikes and tank fire. The IDF said the air force struck "a number" of Hamas targets, while Palestinian eyewitnesses reported that an Israeli tank fired six shells at a water storage facility.
SDEROT, Israel (AP) — Palestinian militants in the Gaza Strip fired a rocket into southern Israel on Sunday, prompting the Israeli military to respond with airstrikes and tank fire on targets inside Gaza. No injuries were reported on either side.
The Israeli military said the rocket landed in the southern border town of Sderot, a frequent target of Palestinian rocket fire. The rocket landed in a residential area next to a house, but there were no reports of damage or injuries.
Shortly afterward, the military said Israeli aircraft and tanks targeted two posts belonging to the Hamas militant group in northern Gaza. Hamas officials said a training camp in northern Gaza was targeted, but the camp had been evacuated after the rocket was fired in anticipation of an Israeli reprisal.
UPDATE: An eyewitness in Sderot said the rocket was a Grad missile with a 140 KG warhead which did not detonate, and landed in the town a few hundred yards from the home of the witness.
Earlier today, al qassam brigade rally in Rafah - Gaza