Palestinians reported that three people were killed in the strike. The three, who were killed in the Beit Lahiya area, were identified as members of the Salah al-Din Brigades.
In the Khan Younis attack, an empty house sustained damage and loud explosions were heard in the area.
According to estimates, the three casualties were preparing to fire a Qassam rocket at Israel. Shortly after the strike, several explosions were heard in the area. Gaza medical sources said the bodies of the three men reached the hospital scorched.
Earlier Tuesday, Palestinians fired two Qassam rockets from Gaza towards Hof Ashkelon Regional Council Tuesday, one of which landed near a kibbutz. No injuries or damage were reported.
Overnight Monday, a Qassam rocket was fired at the same area, and damaged a greenhouse. A Color Red siren was not activated before the rocket hit, but a loud blast was heard during the night.
Searches Tuesday morning revealed that a rocket had exploded in the community's greenhouse area.
On Tuesday morning the IDF killed two people after they were seen crossing the border fence from Gaza into Israeli territory. No soldiers were injured in the incident, and the IDF was combing the area for suspects it believes were trying to plant an explosive device.
Residents of four communities in Eshkol Regional Council were instructed to remain indoors Tuesday morning, due to a possible terrorist infiltration. Some of the roads in the area were also closed to traffic.
Amnon Meranda contributed to this report