The al-Quds Brigades, the Islamic Jihad's military wing, claimed responsibility Tuesday evening for the rocket fired at Sderot, which wounded two youths. One youth sustained critical wounds and the other was moderately to severly injured.
The organization said that the attack came in response to "the Israeli violations of the ceasefire."
Abu Abdallah, a spokesman for the al-Quds Brigades, told Ynet that the attack was done in the framework of a response to a series of ongoing breaches of the ceasefire by Israel.
"As far as we are concerned, the calm has collapsed since Israel has continued to arrest Palestinian activists, including head of the Islamic Jihad in Jenin Sheikh Muhammad Saidi, who was arrested Tuesday morning."
According to him, "The Israelis have not stopped their breaches, and since the ceasefire has taken effect, they wounded eight residents of northern Gaza and several fishermen in the southern Strip, so there is no calm."
'Israel arresting, Killing Palestinians in West Bank'
Abu Abdallah added that his organization has already announced that it will not differentiate between the Gaza Strip and the west Bank.
"They talk about calm in Gaza, but continue to arrest and kill Palestinians in the West Bank. We do not accept this separation and any Israeli breach in the West Bank will be met with a similar response of more and more Qassam fire which our fighters are continuing to improve."
He also said that the organization is working on a series of suicide attacks in Israel and does not settle for rocket fire.
Muhammad Saidi, a resident of the al-Amari refugee camp near Ramallah, said during his interrogation that he and Atzam Faruah, an al-Aqsa member jailed in Israel since 2003, killed Gavrielov in October 2000.