Foreign intelligence agencies have data placing Michael Cohen’s cell phone near Prague in summer 2016, according to a Thursday report from McClatchy.

Relying on four unnamed sources with “foreign intelligence connections,” the story would confirm a key, albeit disputed, detail in the dossier alleging collusion between Trump and the Kremlin produced by former British spy Christopher Steele.

Cohen denied the story in a tweet, saying that he hadn’t been to Prague and that “Mueller knows everything!”

I hear #Prague #CzechRepublic is beautiful in the summertime. I wouldn’t know as I have never been. #Mueller knows everything! — Michael Cohen (@MichaelCohen212) December 27, 2018

McClatchy reported in April that Mueller had obtained evidence confirming that Cohen was in Prague at the time the dossier said. That article has yet to be corroborated by other news outlets.

The new McClatchy story reports that a combination of phone and surveillance data put Cohen in Prague between August and September 2016. Apart from the cell phone, which reportedly left a record with Prague area cell phone towers, “an Eastern European intelligence agency” purportedly overheard a conversation among unidentified Russians stating that Cohen was in Prague.

The dossier claimed that Cohen travelled to Prague in late summer 2016 in part to try to contain negative news stories linking Trump to Russia, and to make sure that European hackers had gotten paid.