JERUSALEM (JTA) — Israel’s military carried out airstrikes on terror group installations in Gaza on Wednesday after terrorists launched rocket attacks on southern Israel.

Four rockets launched in the afternoon sent Israelis in Gaza border communities running to bomb shelters. Two of the rockets were intercepted by the Iron Dome missile defense system, the Israel Defense Forces said.

No group has claimed responsibility for the rocket attack.

Also Wednesday, officials in Sderot said a bunch of balloons with a suspicious device believed to be a homemade bomb attached to it was discovered on one of the southern city’s streets. Police sappers were called to the scene, Ynet reported.

The last rocket fired from Gaza on Israel came last month, when Prime Minister Benjamin Netanyahu had to be rushed off the stage at a campaign event in Ashkelon as Iron Dome intercepted the rocket nearby.