Federal prosecutors in New York have subpoenaed Deutsche Bank for records pertaining to the family business of President Donald Trump’s son-in-law and adviser Jared Kushner.

As The New York Times reported Friday, the exact subject of the subpoena remains vague, and there is no indication that it’s related to special counsel Robert Mueller’s investigation into Russian meddling.

Though Kushner sold the majority of his stake as Kushner Companies’ CEO in January when Trump took office, he still retains some ownership over the family business. As the Times noted, the vast Kushner “family businesses include many legal entities.”

The subpoenas came from the U.S. attorney’s office in the Eastern District of New York, where three members of Mueller’s team have worked, including one as recently as this year, the report continued.

Though the Brooklyn United States attorney has been investigating Kushner’s use of an alleged visa scam, the report noted that Deutsche Bank “does not appear to have been involved,” suggesting the subject of the latest subpoena “may be unrelated.”

Kushner and his mother “have a line of credit from Deutsche Bank worth $5 million to $25 million,” the Times noted, and the bank also gave the company a $285 million mortgage to “help it refinance a loan to purchase several floors of retail space in the former New York Times” building in Manhattan.

Earlier this month, special counsel Mueller subpoenaed Deutsche Bank for records pertaining to Trump’s accounts.