Overview

• Carol Flaz-Burgos, 37, was reported missing on August 31 and found dead in Haverhill on September 3.
• Surveillance footage shows Flaz-Burgos entering neighbor Cristian Montero's apartment but never leaving.
• Montero, 35, was initially charged with witness intimidation and is now facing a murder charge.
• Cellphone data indicated Flaz-Burgos' phone moved away from the apartment at the same time Montero was seen leaving with a cart.
• Montero allegedly misled investigators about his whereabouts during the time of Flaz-Burgos' disappearance.