What happened to the quarantined plane?

Early monday, there was a plane that was quarantined on landing because of powder found in the bathroom. I blinked and there’s no more mention of it. Can’t find anything on the usual news sites. My guess is talcum powder from a diaper change. What actually happened?

I would also guess that it turned out to be something innocent. I’m sure that you would have heard alot more about it otherwise.