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Michigan Attorney General Dana Nessel has announced a coronavirus price-gouging investigation into a business suspected of jacking up the price of hand sanitizer amid the pandemic.

Nessel announced the investigation into A.M. Business Cleaning and Supplies, of Ann Arbor, on Monday.

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She said her office sent the business a subpoena for records after asking a judge to sign off on it last week.

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Complaints began after A.M. Business posted a message on social media advertising hand sanitizer at $60 for a 12-ounce bottle, $40 for an 8-ounce bottle and $20 for a 4-ounce bottle, her office said in a news release. Days before, the bottles were reportedly priced at $7.50, $5 and $2.50, respectively.

A screen shot of the advertisement was attached as an exhibit to a court petition seeking to subpoena the business.

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“Legal recourse is not the preferred option, but my office will take any necessary steps to determine whether reports of price-gouging are valid,” Nessel said.

Also attached as an exhibit in the court filing was a photo of a March 9 receipt which showed that a customer was charged $36 for a 12-ounce bottle of Purell, Mlive.com reported.

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In a letter to Nessel's office, A.M. Business owner Anthony Marshall denied overcharging customers for hand sanitizer, the news outlet reported.

"I want to make it clear that I was not trying to sell individual bottles of Purell at the prices listed in the photo," he said.