Who caught Reverend Parris dancing with his slave Tituba in The Crucible by Arthur Miller?

In the play "The Crucible" by Arthur Miller, it is not mentioned or implied that Reverend Parris was ever caught dancing with his slave Tituba. Reverend Parris was dancing in the woods with his niece Abigail Williams, and it was Reverend Hale who caught him and accused him of practicing witchcraft.