JERUSALEM — The Israeli military says its aircraft have struck militant sites in the Gaza Strip in response to continued rocket fire on southern Israel.

The two sides agreed earlier this week to halt a four-day flare-up of violence but sporadic rocket fire and retaliatory airstrikes have persisted.

Thursday's airstrike came after three rockets were fired at Israel a day earlier. No one was hurt.

Israeli Prime Minister Benjamin Netanyahu has blamed Iran for the latest violence.

He accused Tehran on Wednesday of arming, financing and training the militants in Gaza. He also hinted Israel would be prepared to attack Iran's nuclear facilities even if the U.S. objected. He cited cases such as the 19891 attack on an Iraqi nuclear reactor, when Israel acted against Washington's counsel.