PARIS, Dec 8 (Reuters) - French police have arrested two people suspected of planning a stabbing spree over the Christmas holiday period, French media reported on Wednesday. In a tweet confirming the report, France"s Interior Minister Gerard Darmanin said the "terroristic threat remains on a high level." Islamist literature and Islamic State propaganda was found during the arrests, which were made close to Paris, news channel BFM TV and newspaper Le Parisien reported.