French police secure the entrance of the Air Products company in Saint-Quentin-Fallavier, near Lyon, central eastern France. (Agence France-Presse)
The wife of a man suspected of carrying out an attack on a gas factory in France, during which a decapitated head was put on display, has been taken into police custody, a legal source said.
Police are currently also holding her husband, Yassin Salhi, 35, and another person who was seen driving up and down the gas site in a suspicious manner but has not been formally linked to the attack.