GAZA CITY (Ma'an) -- Israeli warplanes fired on a Gaza City neighborhood early Friday, lightly injuring two Palestinian fighters.

The airstrike on the Zeitoun neighborhood injured two militants who were evacuated to hospital, emergency services' spokesman Adham Abu Salmiya said. Their identities and affiliations were not immediately identified.

An Israeli army statement said the warplanes hit "two terror activity sites in the northern Gaza Strip...in response to the rockets fired at Israel."

Three rockets fired from Gaza landed in southern Israel on Thursday evening, and two projectiles early Friday, without causing injuries of damage.

The armed wing of the Popular Resistance Committees said in a statement on Friday it had launched projectiles at southern Israel early on Friday.

The Nasser Salah al-Din brigades said they fire was in response to Israel's violations of the sanctity of Al-Aqsa Mosque in Jerusalem, and Israeli settler attacks against Palestinians.

On Sunday, Israeli airstrikes on the Gaza Strip injured six people, including a one-year-old infant.