France opened a counter-terrorism inquiry, after a man wielding a knife attacked a soldier in a Paris subway station on Friday, the latest incident targeting troops protecting the capital’s transport hubs and tourist sites.

The Paris incident occurred hours before several people were hurt at a London underground station. The assailant in Paris was wrestled to the ground and arrested. The soldier, part of Operation Sentinel, a force deployed in the wake of lethal attacks on France, escaped unhurt.