ANN ARBOR, Mich. (AP) — Former Michigan Gov. Rick Snyder wants to avoid testifying in a civil trial involving engineering firms that are being sued over liability for lead-contaminated water. That’s because Snyder faces misdemeanor charges in the Flint water crisis.

He says he has a right to remain silent.

A judge has scheduled a March 15 hearing on Snyder’s request that the subpoena be set aside. Veolia North America and Lockwood, Andrews & Newman are in the middle of a trial in federal court in Ann Arbor. They’re accused of not doing more to get Flint to properly treat water that was being pulled from the Flint River in 2014-15.