Canadian analytics firm AggregateIQ, which worked for the victorious Vote Leave campaign in the Brexit vote, has been suspended from Facebook, the company said yesterday. AggregateIQ has been linked to the parent company of Cambridge Analytica, the data firm accused of improperly accessing data from 87 million Facebook users.

Facebook said in a statement that in light of reports that AggregateIQ may have received improperly received data, the firm has been suspended pending an investigation. 

“Our internal review continues, and we will co-operate fully with any investigations by regulatory authorities,” read the statement.

AggregateIQ worked with four different campaigns associated with the campaign to leave the European Union in the June 2016 Brexit referendum: Vote Leave, BeLeave, Veterans for Britain and the DUP. Cambridge Analytica whistleblower Christopher Wylie said he helped found AggregateIQ while he worked at Strategic Communication Laboratories (SCL), the parent company of Cambridge Analytica.

Britain’s Electoral Commission said in December that Vote Leave paid 40 percent of its budget to AggregateIQ. British Columbia’s Office of the Information and Privacy Commissioner said last year it is investigating AggregateIQ’s connection to Vote Leave and announced a joint investigation with Canada’s federal privacy commissioner into both AggregateIQ and Facebook.

Meanwhile, Facebook’s shares have sunk 14 percent since The New York Times and the Guardian’s Observer published their interviews with Wylie, wiping out tens of billions of dollars in market value.

Facebook CEO Mark Zuckerberg will answer questions from Congress next week. In the meantime, Facebook said it’s auditing records in an effort to find any other companies that may have taken advantage of its service.