Overview
- Aéroports de Montréal said the suitcase investigation proved unfounded and the closed runway reopened around 4:40 p.m. local time on March 18.
- The FAA issued a ground stop for some U.S.-origin flights to YUL around 3 p.m., then downgraded it to a ground delay at about 4:45 p.m.
- NORAD reported deploying CF‑18s, F‑16s and KC‑135 tankers to monitor an air security incident and escort two commercial flights into Montreal.
- Quebec provincial police released two men in their 20s and 30s pending further proceedings after initially indicating potential charges, with one man possibly facing fraud allegations.
- The Sûreté du Québec said the RCMP and Canada Border Services Agency are involved in the ongoing investigation, and officials offered differing early descriptions of the threat.