GAZA CITY : Israel carried out two air strikes overnight Monday in the Hamas-ruled Gaza Strip following what the Israeli army said was a Palestinian rocket attack.

Neither Israel nor the Palestinians reported any casualties.

The first raid targeted a training camp of the Ezzedine al-Qassam Brigades, the armed wing of Hamas, near the Nuseirat refugee camp in the centre of the Gaza Strip, Palestinian security sources said.

The second raid struck in the northern part of the strip near the community of Beit Lahiya, the security sources said.

An Israeli army spokesman said “a rocket fired from the Gaza Strip struck the Hof Ashkelon Regional Council” before midnight. “In retaliation the IAF (Israeli Air Force) targeted an underground rocket launcher in the central Gaza Strip and a terror site in the northern Gaza Strip,” he said.

A Palestinian militant was critically wounded on Sunday when an Israeli air strike hit central Gaza. The army said it targeted a “key” figure responsible for cross-border rocket fire.

Tensions have risen in and around Gaza after a year of relative calm, with army figures showing 33 rockets have been fired at southern Israel since the start of 2014.

The increase in Israeli raids and Palestinian rocket attacks as well as border incidents in the last few weeks raise the possibility of a major new confrontation between Israel and the Hamas movement, which has run Gaza since 2007.