03/16/2012 04:12 pm ET

Paul Miller, Murder Suspect, Allegedly Killed Neighbor Who Complained About Barking Dog

Police in Florida are investigating the death of a 52-year-old man, shot dead after he reportedly threatened to murder a neighbor and his barking dog.

Authorities say that Flagler Beach resident Paul Miller, 66, fired five shots using a semi-automatic pistol, killing Dana Mulhall around 6:15 p.m. on Wednesday, The Daytona Beach News-Journal reports.

Miller told detectives that Mulhall threatened to kill him and his barking dog. At one point Mulhall appeared to be reaching for something behind his back, prompting the 66-year-old Miller to open fire, according to KSN. Mulhall suffered fatal wounds to the neck, chest and abdomen.

Although authorities delayed filing charges before investigating whether the suspect feared for his life and acted in self defense, Miller is now charged with second-degree murder, according to the Flagler County Sheriff's website.

Neighbors said they heard gunfire but did not see the shooting, according to News4Jax.

Police believe that the dog had long been a source of tension between the two men, KSN reports.

He is now being held without bail at the Flagler County Inmate Facility.