Four Palestinians were wounded Tuesday, two of them seriously, when a militant rocket or mortar fired at Israel from Gaza fell short and struck inside the enclave, witnesses and medics said.
No further details were available on the incident, except that one of the wounded was a child.
Earlier, two rockets fired at southern Israel from Gaza were intercepted by the Iron Dome defence system, an army spokeswoman said.
According to the army, more than 200 rockets have been fired on Israel since the beginning of the year.
Attacks on Israel and retaliatory air strikes by the Jewish state's forces have increased recently amid tensions over the disappearance of three Israeli youths in the West Bank.
Prime Minister Benjamin Netanyahu has accused the Palestinian Islamist group Hamas of kidnapping them, without providing evidence, a claim Hamas denies.