Two witnesses scheduled to testify in front of the House Oversight Committee Wednesday about the lead water crisis in Flint, Mich., will not be attending, including the emergency manager in charge of the city in 2014 when the water supply was changed.

Darnell Earley was the emergency manager in charge of Flint when the city switched from the Detroit Water and Sewerage Company to the Flint River in April 2014. Maryland Rep. Elijah Cummings, the top Democrat on the committee, said Earley will not be coming to Congress Wednesday to face the committee.