Israeli occupation forces targeted Hamas positions in the Gaza Strip by air and with tank fire Sunday, injuring four people, after a rocket fired from the Israeli-beseiged strip crashed into the Israeli city of Sderot.
Israeli police said the rocket hit "between two buildings on a road" in Sderot, which is less than four kilometres (2.5 miles) from Gaza, causing no casualties.
Army spokesman Peter Lerner said Israeli troops retaliated by hitting targets of the Palestinian Islamist movement in northern Gaza.
"In response to the rocket attack from the Gaza Strip, the IAF (Israeli air force) and tanks targeted two Hamas posts in the northern Gaza Strip," Lerner said in a statement.
Palestinian health and security sources said two people were lightly wounded by the Israeli fire.
"One of them is a 20-year-old (young man) who was hit by shrapnel in the face," said Ashraf al-Qudra, spokesman for the Palestinian health ministry in Hamas-controlled Gaza.
Later on Sunday, two more Palestinians were wounded by further Israeli strikes in the area, Qudra added.
Security sources in the territory said several targets in northen Gaza were struck by Israeli fire, and that a reservoir in Beit Hanun was destroyed.
Witnesses said a base of Hamas's military wing the Ezzedine Al-Qassam Brigades, in nearby Beit Lahya, was also hit.
There was no immediate claim of responsibility for the attack on Sderot.
Since the start of October 2015, Israeli occupation forces have killed at least 160 Palestinians In the West Bank and Gaza.
Israeli media said it was the first time downtown Sderot had been hit by a rocket from Gaza since the last Israeli deadly war on Gaza in 2004.
