Four people have died in Mexico City during World Cup celebrations. Crowds surged near the Zocalo. British fans have been warned to avoid the area.
Word is the Foreign Office is dusting off its crisis protocols. Consular staff are being scrambled. This is the kind of thing that gives the FCDO nightmares.
One senior Whitehall source told me: "We're monitoring the situation closely. British nationals should follow local advice."
Translation: Keep your head down. Don't be stupid.
The deaths are a stark reminder of the risks of mass gatherings. The government's line will be safety first. But expect grumbling from fans who feel the travel advice is too cautious.
Polling will shift if more British tourists are caught up. The Home Office will be watching. The last thing they need is a consular crisis on top of the small boats issue.
Inside the department, there is a quiet fear. Mexico has a history of violence. The World Cup was supposed to be a celebration. Now it is a tragedy.
Keep an eye on the FCDO's social media feed. They will update travel advice at the first hint of further trouble. The travel industry is also holding its breath. Cancellations could hit tourism stocks.
This story has legs. We will keep covering it. The cause of the surge is still unclear. Was it a stampede? An attack? The Mexican authorities are saying little.
For now, the message to Brits is simple: stay safe, stay informed, stay away from the Zocalo. The game is over. The real politics is just beginning.
