Two Palestinians were killed and some others injured on Monday night in an Israeli airstrike on northern Gaza Strip town of Beit Hanoon, medical officials said.

Gaza emergency spokesman Ashraf al-Qedra told reporters that Musa'ab Za'aneen, 21, a Palestinian from Beit Hanoon was killed and three others wounded, including a child in an Israeli airstrike on the town.

Al-Qedra added that one of the three wounded Palestinians, who was in critical conditions, died later of his wounds in the hospital, adding that the death toll of the Israeli airstrike climbed to two killed and two wounded.

He said that the second Palestinian who died of his wounds was identified as Yousef Nasser, 31 years old, who was also resident of the town.

Witnesses said that they heard a sudden explosion in the town, adding that it was a result of an Israeli airstrike, which killed one person and wounded three others, one of them was in critical conditions.

It wasn't known if Za'aneen or Nasser were militants, but the witnesses said the Israeli airstrike on the town was carried out shortly after unknown militants launched a homemade rocket from the area on southern Israel.