Michigan Governor Rick Snyder is seen at a bill signing event in Detroit, Michigan, U.S. on June 20, 2014. Picture taken on June 20, 2014. REUTERS/Rebecca Cook

(Reuters) - Michigan Governor Rick Snyder denied Thursday that he had misled a U.S. House of Representatives committee last year over testimony on Flint’s water crisis after lawmakers asked if his testimony had been contradicted by a witness in a court hearing.

The House Oversight and Government Reform Committee wrote Snyder earlier Thursday asking him about published reports that one of his aides, Harvey Hollins, testified in a court hearing last week in Michigan that he had notified Snyder of an outbreak of Legionnaires’ disease linked to the Flint water crisis in December 2015, rather than 2016 as Snyder had testified.

“My testimony was truthful and I stand by it,” Snyder told the committee in a letter, adding that his office has provided tens of thousands of pages of records to the committee and would continue to cooperate fully.

Last week, prosecutors in Michigan said Dr. Eden Wells, the state’s chief medical executive who already faced lesser charges, would become the sixth current or former official to face involuntary manslaughter charges in connection with the crisis.

The charges stem from more than 80 cases of Legionnaires’ disease and at least 12 deaths that were believed to be linked to the water in Flint after the city switched its source from Lake Huron to the Flint River in April 2014.

Wells was among six current and former Michigan and Flint officials charged in June. The other five, including Michigan Health and Human Services Director Nick Lyon, were charged at the time with involuntary manslaughter stemming from their roles in handling the crisis.

The crisis in Flint erupted in 2015 when tests found high amounts of lead in blood samples taken from children in the predominantly black city of about 100,000.

The more corrosive river water caused lead to leach from pipes and into the drinking water. Lead levels in Flint’s drinking water have since fallen below levels considered dangerous by federal regulators, state officials have said.