Israeli air strike kills two as Palestinian unrest spreads

An Israeli air strike in Gaza killed a pregnant woman and her toddler and Hamas warned the Jewish state against "foolishness" Sunday as Palestinian unrest spun further toward a full-scale uprising.

After days of unrest elsewhere, Gaza has been drawn into the violence since Friday, with clashes along the border leaving nine Palestinians dead, including teenagers, from Israeli fire.

Overnight, Israel said it targeted "two Hamas weapon manufacturing facilities" after Gaza militants fired two rockets and following attempts by Palestinians to violently cross the border.

One of the rockets had hit an open field in southern Israel and the other was intercepted.

Israel's retaliatory air strikes demolished a house in the northern area of Zeitun, killing Nur Hassan, 30, and her two-year-old daughter Rahaf, Gaza medics said, and trapping three others under the ruins.

Border clashes that broke out Friday came as Hamas's chief in Gaza, Ismail Haniya, called the overall violence an intifada and urged further unrest.

Hamas, which rules Gaza, the enclave hit by three wars with Israel since 2008, remains deeply divided from president Mahmud Abbas's West Bank-based Fatah. 

It was unclear whether Hamas or another group fired the rockets. Salafists claiming links to the Islamic State group have claimed recent rocket fire from Gaza, but Israel holds Hamas responsible for all such acts.

In response to the air strike, a Hamas spokesman said this shows the occupation's desire to escalate.

We warn the occupation against continuing this foolishness, said Sami Abu Zuhri.