Published: Sep 01, 2011 5:54 PM EDT
Updated: Sep 01, 2011 9:35 PM EDT

BOKEELIA, Fla.- The missing Cape Coral teacher, Amy Patterson, is now believed to be dead. She disappeared in July and authorities are calling her boyfriend the prime suspect. Daniel Proctor is currently on the run and considered armed and dangerous.

A manhunt for Proctor is under way. Law enforcement agencies across the Southeast are looking for him, including U.S. Marshals.

Meanwhile, investigators in Lee County continue to search through the house, hoping to find clues.

Crime scene investigators comb through Patterson's home all day Thursday. Detectives have interviewed neighbors looking for clues. The Mariner Middle School teacher disappeared sometime in late July and investigators believe she's dead.

According to family members who spoke to WINK News, Patterson and Proctor have a history of domestic violence. They divorced in 1994, but in recent months, the two got back together. Those who saw Patterson before she disappeared say she was happy.

Authorities say after Patterson disappeared, Proctor told people she died in a car accident. Weeks later his story began to unravel. Family and friends became concerned and she was reported missing.

Proctor was last seen visiting his family in Alabama. From there, he left a note, stole a handgun, and a friend's car.

Detectives from the Lee County Sheriff's Office are in Alabama following leads, while hope of finding Patterson alive fades.

Investigators are not revealing what Proctor wrote in that note that was found in Alabama. WINK did find out part of the note indicated he was coming back to Florida. Anyone with information is urged to call authorities.