Israel has resumed its Gaza offensive after a series of Palestinian rocket attacks.

The Israeli military said Sunday that following "Hamas' incessant rocket fire" during the unilateral Israeli extension of a temporary humanitarian truce it would resume targeting Gaza militants.

Israel's Cabinet had unilaterally decided to extend the truce for 24 hours, until midnight (2100 GMT) Sunday. Hamas, which has requested the lifting of an Israeli and Egyptian blockade on Gaza, among other demands, did not agree to extend the truce.

The 20-day operation has already killed more than 1,000 Palestinians and 45 Israelis.