The Justice Department has opened up a criminal investigation into potential money- laundering violations by Deutsche Bank — including transactions linked to President Trump’s son-in-law, Jared Kushner, according to a report.

The DOJ is investigating why the bank didn’t alert the US Treasury to potentially suspicious transactions by Kushner’s family and the Kushner Cos. in 2016, including money to Russian individuals, according to the New York Times.

Investigators are looking into why the bank didn’t file alerts, known as Suspicious Activity Reports, even though compliance employees had prepared them, according to the report.

DOJ investigators are relying on information provided by Tammy McFadden, a whistleblower who helped prepare the reports. They have been talking to Val Broeksmit, the son of a banker who oversaw a unit of the bank that’s been troubled by money-laundering violations since before the 2016 Kushner transaction.

That banker, William Broeksmit, committed suicide in 2014 and was profiled in The Post’s award-winning video “The Banker Suicides” in 2016.

A spokeswoman for Kushner Cos. told the NYT the firm is not under investigation. A Deutsche Bank spokeswoman said the company would cooperate with “authorized investigations.”