Jerusalem (CNN) Prime Minister Benjamin Netanyahu was taken off the stage at a campaign event in southern Israel Wednesday night as a rocket was fired from Gaza toward the city of Ashkelon, just one day before the 70-year-old Israeli leader faces a leadership challenge within his Likud party.

About two minutes after Netanyahu was introduced, video from the event shows Netanyahu being led away by security as the crowd chants "Bibi, Bibi!"

The event organizer tells attendees there is a red alert in Ashkelon, warning of incoming rocket fire. He then says there is no need to worry.

According to the Israel Defense Forces (IDF), one rocket was fired from Gaza toward Israel and was intercepted by the Iron Dome aerial defense system.

Netanyahu returned to the stage about 12 minutes later, as the crowd again chants "Bibi!"

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