As it happened: Employee goes on deadly knife rampage at Paris police headquarters

Bertrand Guay, AFP | Police officers stand guard near Paris’s Préfecture de police (police headquarters) on October 3, 2019 after four officers were killed in a knife attack.

A 45-year-old IT worker went on a rampage at Paris police headquarters on Thursday, killing four people including three police officers with a ceramic knife before being shot and killed. Read our live blog to see how the day's events unfolded.

• Four people, including three police officers and an administrative worker, were killed in the knife attack at Paris police headquarters, which lies across the square from Notre-Dame Cathedral.
• A police union official said an officer shot the attacker “in a situation that appears to be self-defense”. 
• The attacker was described as a model employee. He has not been named and investigators are still looking into a possible motive for the crime.
• The Paris prosecutor’s office has opened an investigation into manslaughter and willful homicide.