The ease with which would-be terrorists can purchase battlefield weapons on the streets of Europe was brought into the spotlight, as it emerged the station used by the gunman to launch his botched attack is surrounded by a market notorious for illegal weapons trade.
Ayoub el-Khazzani boarded the train he had chosen for the attempted massacre at Brussels' Gare du Midi, metres from where the terrorists behind the Charlie Hebdo atrocity in Paris this year bought their arsenal.
He was carrying a short-stocked Kalashnikov assault rifle, at least five magazines of ammunition, a handgun and knives. He has told police he had stumbled across the weapons "by chance" in a Brussels park, and planned to rob the passengers.
The Eurostar rail terminal is a short metro ride from the buildings of the European Union institutions, and on the day of the attempted attack it was teeming with tourists.
But the station is surrounded by grimy streets that host a weekly market, notorious for selling weapons including Kalashnikov assault rifles for as little as 1000 ($1700).