NBC News reported Wednesday evening that an arrest has been made in the case of ricin-laced letters being sent to the President Barack Obama and to Sen. Roger Wicker (R-Miss.). The suspect was identified as Kenneth Curtis of Tupelo, Miss.

According to the FBI, both letters contained a closing statement with the identical phrase, “to see a wrong and not expose it, is to become a silent partner to its continuance.” Both are also signed with the initials ‘KC.”

The Department of Justice released the following statement on the arrest, confirming the name of the suspect to be Paul Kevin Curtis, and not Kenneth Curtis. The FBI confirmed him to be 45 years old.