LANSING, MI -- The Unemployment Insurance Agency in a partial review of unemployment cases so far has reversed around 90 percent of computer-adjudicated fraud cases and 47.5 percent of fraud cases where a human was involved in making the determination.

Problems with the Unemployment Insurance Agency's system emerged when Michiganders started getting flagged for fraud by a state computer system between Oct. 2013 and Aug. 2015. Those affected describe only being notified via old unemployment insurance accounts they no longer used, and then being hit with 400 percent fines.

In total, close to 50,000 cases from Oct. 2013 to Aug. 2015 are being reviewed. Of those, 20,000 were judged solely by computers, and those cases were reviewed last year. Those were the cases where a computer alone determined fraud on individuals, and around 90 percent of those were reversed, according to Department of Talent and Economic Development spokesman Dave Murray. The department oversees the Talent Investment Agency, which the Unemployment Insurance Agency is organized under.

In an additional 28,000 cases where fraud was determined, there was some level of human involvement in determining fraud. So far the agency has reviewed 14,454 of those cases and reversed 47.5 percent of those fraud determinations. The agency has paid out $722,093 in refunds on these types of cases so far.

Wanda Stokes, director of the Talent Investment Agency, is working to make changes.

"We need to be a resource for people during a difficult time in their lives, and the agency is working hard to rebuild trust," Stokes said in a press release.

"We are addressing these serious problems from the past while looking forward to improve customer service and restore confidence."

The department has established a hotline for those affected.

Murray said the agency started having humans take part in all fraud determinations starting in August 2015, and has made changes to make sure determinations are accurate.

"We want to be 100 percent correct, while remaining vigilant against fraud and identity theft, which are big problems," Murray said.

Of the 14,454 cases with human involvment that have been reviewed, reasons for reversals included:

In 72 percent of the reversals, the agency originally averaged wages over an entire quarter, which led to a fraud finding. This practice has since been disallowed by the U.S. Department of Labor.

In 15 percent of the reversals, the agency contacted an individual, received new information and reversed the claim based on it.

In 7.5 percent of the reversals, the agency had received information after the original decision was made.

In 5 percent of the reversals, the agency determined that there was no overpayment of unemployment insurance benefits in the original case -- something that is necessary to support a fraud determination.

In 0.5 percent of the reversals, the Michigan Administrative Hearing System returned the case for a reconsideration of the agency's original decision.

Note: This story has been updated to correct the period during which the adjudications were made, which is Oct. 2013 through Aug. 2015.