Gainesville authorities believe missing woman is dead

Gainesville Police and Alachua County deputies now think a missing woman is dead.

23-year-old Hannah Brim was last seen more than three weeks ago.  Authorities are now searching for her body.

Investigators released surveillance video of the last time she was seen.  Authorities say she was in the passenger seat of a car driven by 28-year-old Nelson Armas and that he was the last person to see her alive.  

Armas is considered a person of interest and is currently in the Alachua County Jail on an unrelated charge.