Israel began air strikes in the Gaza Strip in retaliation to Hamas' attacks on its border last week.
The early Monday air strikes hit a Hamas training camp in northern Gaza but no casualties were reported.
According to the Hamas security sources, two rockets hit a training camp of Ezzedine al-Qassam Brigades in the east of Gaza City in the Zeitoun neighbourhood.
The Gaza Strip is ruled by the Hamas militant group.
The strikes were a response to Hamas' attacks on military patrol vehicles near the Gaza border on Friday and Sunday.
The country last attacked the Gaza Strip in November, as well as targeting the Ezzedine al-Qassam Brigades, in response to a rocket fire on its border.
There have been sporadic attacks on the Gaza Strip since the end of Operation Protective Edge in 2014.
The operation lasted for nearly 50 days last year killing hundreds of Palestinians and 70 Israelis.
An Amnesty report released earlier this year blamed Israel for 'disproportionate or indiscriminate' attacks. Israel termed the report to be 'fundamentally flawed'.
The Israel Defense Force is planning to add another battery of the Iron Dome system to intercept short-range rockets, and introduce the Magic Wand system to intercept medium-range rockets, the Haaretz reported.
Israel will close its F-16C fighter jets squadron once it begins receiving the F-35 Lightning II aircraft from the US, the report said.