HEBRON (Ma'an) -- A woman was stabbed to death and another seriously injured after being attacked in Hebron city center on Saturday, police said.

An unidentified man attacked the two sisters with a knife in the Ein Sarah neighborhood of the city, with both women evacuated to hospital.

One of the women died shortly after arriving at Al-Ahli Hospital and the other is in a serious condition, director of Hebron police Ramadan Awad told Ma'an.

The attacker fired gunshots in the air before fleeing the scene, security officials said.

Police have launched an investigation into the murder.

The women had recently been released from police custody after being detained for the suspected involvement in the killing of one of their husbands three years ago, Awad said.