Washington, Feb 18 (IANS): A former director of Cambridge Analytica, who visited WikiLeaks founder Julian Assange after the 2016 US presidential election, was subpoenaed by Special Counsel Robert Mueller's office and cooperated, according to her lawyer.

Brittany Kaiser was a director at the controversial data company that worked for President Donald Trump's campaign and visited Assange in the Ecuadorian embassy in London where he has been living since he was granted asylum to avoid extradition in 2012.

Kaiser's lawyer Jim Walden told CNN on Sunday: "The Mueller subpoena was issued long ago, and Brittany has already discharged her obligations. Whatever interest there was in Brittany seems past."

Last June, the Guardian reported that Kaiser had met Assange in February 2017. After that report, Kaiser told CNN that she and Assange had not discussed the election.

Cambridge Analytica has come under fire over allegations that it misused the personal Facebook data of millions. Former Trump adviser Steve Bannon was one of the company's founders.

The company has since been shut down.

According to her LinkedIn profile, Kaiser spent four years at the company and left in March 2018.