Its military offensive in the Gaza Strip may extend over a week, the Israeli army said on Saturday.
The military is preparing for week-long operations in the Palestinian territory, Israeli military spokesperson Ran Kochav said.
In Israeli airstrikes across Gaza since Friday, at least 11 Palestinians were killed and 80 others injured.
Adding that the Palestinian movement lacks organization and command making it difficult to understand the decision-making within the group, Kochav said the Israeli army is currently working against the Islamic Jihad rocket launching groups in Gaza.
More than 160 rockets were fired by the Islamic Jihad group from Gaza into Israel, with 60 of them intercepted, according to the Israeli army.
The Israeli response in Gaza is meant “not to drag the Hamas group into the ongoing conflict,” the spokesperson told a local television channel.
When Israeli forces detained Bassam al-Saadi, a senior leader of the Islamic Jihad group, in a raid in the West Bank city of Jenin, tensions escalated across the Palestinian territories on Monday.
Amid fears of a retaliatory response from the Islamic Jihad group to the arrest, the Israeli army has imposed restrictions on the Gaza Strip, including the closure of border crossings with the Palestinian territory.
Among those killed in Israeli attacks on Gaza include senior leader Tayseer al-Jabari, the Palestinian group said on Friday.