Police union official: The hostage-taker has killed at least one person inside the supermarket.
A policeman has been shot and a man has taken hostages at a supermarket in south west France, according to reports.
The gunman has claimed allegiance to the Islamic State group, the local prosecutor’s office said.
France’s Interior Ministry said security officials were carrying out an operation at a supermarket in town of Trebes in southern France.
More to follow…