Authorities announced Monday that Adalberto Montalvo, 29, Quinton Sylvestre, 26, and Samuel Walker Jr., 28, have been charged with first-degree murder and robbery with a firearm in the death of bartender Rafael Rodriguez at Josephine s Restaurant on Jan. 4. "A very unique Chopard watch that was recovered was key to the case, Police Chief Boca Raton Police Chief Dan Alexander said. Palm Beach County State Attorney Dave Aronberg also spoke about the case. The suspects have been in jail since January on burglary and grand theft charges. Detectives are seeking the identity of a fourth suspect in the case, police said.