The Justice Department has launched a criminal investigation into whether top executives at Equifax (EFX) - Get Report violated insider trading laws when they sold company stock prior to the credit reporting agency disclosing its massive data breach, Bloomberg reports.

DoJ is looking at the stock sales executed by Equifax CFO John Gamble, President of U.S. Information Solutions Joseph Loughran, and President of Workforce Solutions Rodolfo Ploder.

Earlier this month, Equifax disclosed a massive data breach took place at the company in July that compromised the information of over 140 million people. Equifax has stated that its executives were unaware of the breach when they sold shares of the company.

The investigation will be headed by the U.S. attorney's office in Atlanta, where Equifax is headquartered.

Shares of Equifax were moving lower in mid-morning trading on Monday. Shares of the company are lower over 33% in the past month. 

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