Twitter Inc. sold data access to the Cambridge University academic who also obtained millions of Facebook Inc. users’ information that was later passed to a political consulting firm without the users’ consent.

Aleksandr Kogan, who created a personality quiz on Facebook to harvest information later used by Cambridge Analytica, established his own commercial enterprise, Global Science Research (GSR). That firm was granted access to large-scale public Twitter data, covering months of posts, for one day in 2015, according to Twitter.

“In 2015, GSR did have one-time API access to a random sample of public tweets from a five-month period from December 2014 to April 2015,” Twitter said in a statement to Bloomberg. “Based on the recent reports, we conducted our own internal review and did not find any access to private data about people who use Twitter.”

The company has removed Cambridge Analytica and affiliated entities as advertisers. Twitter said GSR paid for the access; it provided no further details.

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