Traffic disrupted on Transilien line R after knife attack at Gare de Lyon

At around 8 a.m. this Saturday, a man attacked several passengers with a knife in Hall 3 of the Gare de Lyon, injuring several people, including one in a serious condition. Since then, the area has remained closed and guarded by a large military and police force, while the situation in the rest of the station is normal, with trains running on time. But for users of the Transilien R line, some difficulties are expected on arrival.

• To be read
• Best bets for the week of October 19–25, 2026 in Paris and Île-de-France

Some trains will be cancelled throughout the day, and traffic will also be slowed down between the Paris Gare de Lyon and Montargis stops, and between Paris Gare de Lyon and Montereau. Trains will have to avoid hall 3 for the duration of the procedure, which is likely to overload halls 1 and 2 and affect the arrivals of users from the Île-de-France region, as TGVs have priority.

Metro, RER, Transilien: which lines should you avoid this weekend, October 17–18?
Transports in Île-de-France call for caution this weekend of October 17-18, 2026, as a protest against the cost of living is announced for Saturday, works on several lines get underway, and the first Toussaint departures begin. [Read more]