DraftKings said Monday there is no evidence the online betting platform’s systems were breached following a report that some users were hacked.

An unknown number of users discovered unusual activity associated with their DraftKings account that led to withdrawals from their bank accounts, according to a report by The Action Network and social media posts. Several users described being locked out of their accounts before noticing the drawdowns.

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“DraftKings is aware that some customers are experiencing irregular activity with their accounts. We currently believe that the login information of these customers was compromised on other websites and then used to access their DraftKings accounts where they used the same login information,” Paul Liberman, DraftKings’ co-founder and president for global technology and product said in a statement.

The company said it has identified less than $300,000 of customer funds that were affected by the unusual activity and that it intends to “make whole any customer that was impacted.”

The incident comes at a time when users are increasingly skeptical of online financial transactions following the recent collapse of crypto platform FTX. DraftKings said it strongly encourages users to use unique passwords.

Shares of the company fell as much as 11% Monday following the report before recovering slightly. The stock was down about 5% in late trading.