The FBI and U.S. Marshal Service are joining the nationwide manhunt for a murder suspect charged with a fake bear attack

The FBI and U.S. Marshal Service have joined the nationwide manhunt for a Tennessee man who staged a bear attack under a false identity to cover up a murder.

Nicholas Wayne Hamlett pretended to be a man named Brandon Andrade when he called 911 around 11:34 p.m. on Oct. 24 and told police he was injured and trapped in a body of water after a bear hit him while he was hiking in Hamilton County, the Monroe County Sheriff's Office wrote in a Facebook post.

Authorities traced the call to an area near Tellico Plains, northeast of Chattanooga. There they found a bloody body with Andrade's ID. Police later learned that Andrade's ID had been stolen by Hamlett and used multiple times. Police believe Hamlett stole the ID to avoid parole and then faked his death for an unknown reason.

At a news conference Wednesday, authorities said they realized something was wrong when the dead man's injuries were not consistent with a bear attack or a fall from a cliff and quickly realized the dead man was not Andrade .

Hamlett is considered “armed and dangerous” and authorities urged anyone with information about his whereabouts to come forward and urged the criminal to turn himself in.

“Nick. Let's end this peacefully. Imagine. “Have your day in court,” Joseph Carrico, the FBI’s special agent in charge for the state of Tennessee, said at the conference.

“The long arm of the law has a long and wide reach, and we will find you no matter where you are hiding. The deputies and investigators here now know their county well. The TBI agents know their state well. The FBI and the Marshall Service.” “I know the country well and have representation all over the world,” Carrico continued.

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Authorities did not identify the man who died at the conference. But Monroe County Sheriff Tommy Jones said Hamlett and his victim had known each other for “several months” before the attack occurred.

Hamlett, 45, used a false name when police questioned him about his 911 call. Authorities believe he left his home in Tennessee and say he also has ties to Alabama, Montana, Alaska, Kentucky and Florida.

“There is a risk to the public, a major risk to the public,” Jones said. “The perpetrator has a history. He knew this victim. He's known him for a few months now. But yes, there is a danger to the public. This was by no means an isolated incident.”

The US Marshal Service is offering a $5,000 reward for information leading to the wanted man. Anyone who sees Hamlett is asked to call 911, Monroe County Dispatch at 423-442-4357 and not to approach him. Anyone with information is asked to contact local law enforcement or call 1-877-926-8332.

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Nicholas Hamlett is suspected of murder in Tennessee. (Monroe County Sheriff's Office)

According to WBS, Hamlett was arrested in Niceville, Florida in 2009 after luring a man into the woods in Alabama.

Hamlett held the Alabama man at gunpoint and tried to hit him with a baseball bat before burying him in the woods, AL.com reported. He used the name Joshua Jones when he approached the victim so “he could get insurance,” according to court documents reviewed by the outlet.

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Tellico Plains in East Tennessee, the region where Hamlett disappeared. (Amy Smotherman Burgess/Knoxville News Sentinel via USA TODAY NETWORK)

Hamlett was charged with attempted murder and kidnapping in 2012, but pleaded guilty to the lesser offense of assault and was sentenced to 20 years in prison. He had four prior felony convictions, according to Alabama court records.

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Hamlett, who is wanted for first-degree murder in connection with the unidentified man's death, is described as having blue eyes, standing 5 feet 10 inches tall and weighing 170 pounds. He reportedly uses multiple pseudonyms and may still be using Brandon Andrade's name.