Gaza blast kills Hamas militant

An explosion in a refugee camp in the Gaza Strip has killed a Palestinian militant and injured his wife and son, medical sources said.

The dead man was named as Ahmed Ibrahim Sari, 30, a member of the armed wing of Hamas, the Ezzedine al-Qassam Brigades.

The militant Islamic group runs the Palestinian Authority after winning parliamentary elections in January.

The cause of the explosion is not yet known. Israel says there were no military operations in the area.

The Israeli army frequently carries out air strikes against Palestinian militants in Gaza, usually claiming responsibility shortly afterwards.

Fire engines raced to the scene of the blast in Jabaliya camp and rescue crews searched through the rubble of the building.

Hundreds of people, including dozens of weeping women, gathered outside the house after the explosion, according to eyewitness reports.

The explosion comes just hours after five other Palestinians were killed in the most serious round of deadly feuding between supporters of Hamas and the former ruling party Fatah.