A police spokesman said a car was damaged in Tel Aviv and a rocket was intercepted in the Jerusalem area, where witnesses heard several explosions shortly after warning sirens sounded, and the military said one rocket struck inside an open area.
"Police have stepped up patrols in response to the wave of rocket fire," spokesman Micky Rosenfeld said.
Hamas's armed wing issued a statement after the rocket barrage accusing Israel of "violating the calm and committing a massacre ... the enemy has opened the gateway to hell." It vowed Israel would "pay a heavy price" for its air strikes.