A 77-year-old was beheaded in the south of France.
Security forces found the woman's body in her apartment in Agde.
According to the French newspaper Le Figaro, the woman's head was on the kitchen table.
The woman's son had alerted the authorities that he could not reach her.
The two were in daily contact.
The officers found battle marks in the apartment in the coastal town.
According to "Le Figaro" there were latex gloves and rolls of tape in the garden.
There were no indications of a break-in, it said.
The exact circumstances of the act were initially unclear.
kha / dpa