A powerful explosion went off in a house in southern Gaza on Saturday, killing two women and a four-year-old girl, Palestinian medics and witnesses said.
The cause of the blast in the town of Khan Yunis was not immediately clear.
The blast tore down the facade of the house and badly damaged its interior. A neighboring house was also partially damaged from the force of the blast.
The IDF said it was not carrying out any operations in the area at the time.
Hamas police said they suspected explosives being handled by militants went off prematurely.
Two children and a woman were wounded in the blast.