PARIS, March 16 - A shooting has taken place at a high school in the small southern French town of Grasse, injuring at least two people, a police source said. The source said it was too early to say whether it was a terrorist attack but that one man had been arrested and a second was possibly being sought. Local emergency services advised residents on Twitter to stay at home. The government launched its mobile telephone application warning of a 'terrorist' attack.
