- U.S. Marshals say Darnell Earley has been served with a subpoena
- The state-appointed former Flint emergency manager says he didn't know water was contaminated
- Flint's water has been tainted since April 2014, when its supply was switched from Lake Huron
(CNN)The former emergency manager for the city of Flint -- who was at the helm when polluted water began flowing through the taps -- claims he did not know the water was dangerous.