After knife rampage, French police are alert for radicalised colleagues

FILE PHOTO: A rescue helicopter is seen after an attack on the police headquarters in Paris, France, October 3, 2019. REUTERS/Christian Hartmann/File Photo

PARIS (Reuters) - French police have re-opened an internal investigation into the suspected Islamist sympathies of a senior police officer, three sources close to the police said, as part of a security review after a police IT worker killed four colleagues in a knife rampage.

Colleagues of Mickael Harpon, a convert to Islam, had alerted bosses four years ago that they were concerned that he was behaving unusually, but no formal investigation was launched and he kept his job.