Sources with knowledge of the incident said the official, Rafael Quintero Curiel, served as the lead press advance person for the Mexican Delegation and was responsible for handling logistics and guiding the Mexican media around at the conference. He took six or seven of the handheld devices from a table outside a special room in the hotel where the Mexican delegation was meeting with President Bush earlier this week.

Everyone entering the room was required to leave his or her cell phone, BlackBerry and other such devices on the table, a common practice when high-level meetings are held. American officials discovered their missing belongings when they were leaving the session.

It didn't take long before Secret Service officials reviewed videotape taken by a surveillance camera and found footage showing Quintero Curiel absconding with the BlackBerries.