Law enforcement in Washington, D.C., announced the arrest of two people in connection with defacing Tesla vehicles as the company faces protests and attacks over CEO Elon Musk‘s work in the Trump administration.

The Metropolitan Police Department said Justin Fisher, 49, and Emily Fisher, 50, vandalized four vehicles between March 1 and 21 by writing “political hate speech” on them. Officials also said Justin Fisher defaced two other vehicles on March 9 and 12. The department previously said it would investigate these alleged crimes as hate crimes.