JERUSALEM, April 2 (UPI) -- Israel conducted eight airstrikes on Gaza Friday, hitting two weapons factories during the assault, Israeli military officials said.
There were no immediate reports of casualties, CNN reported.
The airstrikes were carried out in retaliation for the firing of Qassam rockets into Israel from Gaza, an Israeli military spokesman said in a statement.
"The (Israeli military) will not tolerate any attempt to harm the citizens of Israel and will continue to operate firmly against anyone who uses terror against it," the statement said.
The Jerusalem Post reported a rocket fired from Gaza exploded south of Ashkelon Friday afternoon. Officials said the rocket hit an open area, causing no casualties or damage.
Defense officials said their information indicates Hamas is under pressure from other terrorist factions to resume its attacks on Israel from Gaza, the Post said. Since Israel's military operation in Gaza last winter, Hamas has refrained from attacks for the most part. It ceased its rocket attacks, but other terrorist factions have fired intermittently, defense officials said.
The newspaper said pressure is thought to be coming from stand-alone Palestinian militant groups, Palestinian terrorist groups affiliated with al-Qaida and mid-level Hamas military commanders disappointed with the organization's decision to refrain from attacks along the Gaza-Israel border.