One rocket launched from the Gaza Strip landed in Israel on Tuesday, with no damage or injuries were reported, police and the military said.
Remnants of the rocket landed near the port city of Ashdod, about 20 kilometres north of the Gaza Strip. It was the longest range strike since a ceasefire ended a 50-day war between Gaza militants and Israel last August.
So far, no group in the Gaza Strip has taken responsibility for launching the rocket.
Earlier reports by Israeli media said five rockets had been fired.
Palestinian militants in the Gaza Strip launched thousands of rockets and mortar shells during a war with Israel last July and August. Very few rockets attacks have occurred since the ceasefire.
Israeli media speculated that infighting among Islamic Jihad militants in the Gaza Strip may have precipitated the launching without Hamas’ permission.