French police attack: Parliament begins investigation

French President Emmanuel Macron has led a national tribute to the four police officers killed by their own colleague last week.

Thursday’s knife attack was carried out by a technology administrator, who had links to an ultraconservative Muslim movement.

Now, the government is coming under pressure as parliament begins an investigation into how an employee was able to kill four people inside a Paris police station.

Al Jazeera’s Natacha Butler reports from Paris.