Four Palestinians, including three children were killed on Monday night in two separate incidents in southern Gaza Strip ruled by Islamic Hamas movement, medics in Gaza said.

They said that three children, all are brothers, were killed at their home in the village of Abbassan, east of the southern Gaza Strip city of Khan Younis, when an electric generator exploded, adding that five family members were injured.

Medical sources at Nasser Hospital in the city said that the three children were killed and five wounded, three of them are in critical conditions, when a small electric generator full of fuel had suddenly exploded.

Several electric generators explosion accidents occurred recently in the blockaded Gaza Strip due to the increase of the blackouts hours because of the industrial fuel shortage to operate Gaza's sole power station.

Medical sources said that six people were killed in the last couple of months in similar accidents.

Meanwhile, doctors at Abu Yousef al-Najjar Hospital in the city of Rafah in southern Gaza Strip said that rescue teams pulled out the body of a Palestinian worker buried under one of the underground tunnels on the borders with Egypt.

They said that the 22-year-old man was apparently killed by an electric shock in the tunnel used for smuggling goods from Egypt into the Gaza Strip.

Since Israel had imposed a tight blockade on the Gaza Strip, the Palestinians dug hundreds of underground tunnels used for smuggling all kinds of goods including electric generators and fuels.