Arkansas

Criminal Procedure

Rule 4.4 – Procedures on Arrest

Upon making an arrest, a law enforcement officer shall

(a) identify himself as such unless his identity is otherwise apparent;
(b) inform the arrested person that he is under arrest; and
(c) as promptly as is reasonable under the circumstances, inform the arrested person of the cause of the arrest.

Ark. R. Crim. P. 4.4