Source: AOL News

Convicted D.C. sniper Lee Boyd Malvo made shocking new claims about his crime spree -- during an interview with actor William Shatner.

In the interview that aired on A&E on Thursday night, Malvo not only admitted to committing approximately 42 shootings around the country with John Allen Muhammad; he also claimed the duo had initially worked with two co-conspirators.

"Getting the opportunity to speak with Lee Malvo is a moment I'll never forget," Shatner said in an A&E press release. "He was only 17 when he committed these horrific acts, a monster forged by the only father figure in his life, and it was simply astonishing that he's found the maturity and humility to admit so many new crimes in his effort to make amends."

Authorities in Virginia said the claim had no credibility, but police in Maryland want to interview him.

The interview with Malvo was conducted for Shatner's new series "Aftermath With William Shatner."

Malvo and Muhammad were arrested in 2002 after a three-month crime spree that terrorized the Washington metro area and culminated in the deaths of 10 people. Because of his age at the time, Malvo was sentenced to life without parole. Muhammad was sentenced to death and was executed by injection in November 2009.

Speaking with Shatner via telephone from Virginia's Red Onion State Prison, Malvo, now 25, spoke candidly about the shooting spree and revealed new details that had never before been made public, including the revelation that he and his partner were involved in a total of 42 shootings and not 13 as originally reported.

"He would send me to do a crime, and then he would watch the crime," Malvo said. "[He would then] evaluate me after we finished ... what was wrong, what I needed to change ... [and] my tactics."

Perhaps most shocking of all, Malvo shared details about two co-conspirators he said were involved in the shooting spree.

"There were two other people who were supposed to be involved, but in the end, they ended up backing out," Malvo said.

"What was supposed to happen was that there was supposed to be three to four snipers with silenced weapons, silenced rifles, and in this way, you could do a lot more damage along the entire Eastern Seaboard. ... In the end, there was only Muhammad and myself," Malvo continued.

Shatner also interviewed survivors and family members of victims, law enforcement officials and Malvo's forensic psychiatrist.

As interesting as the new revelations are, authorities have dismissed them as lies and fantasy, according to The Washington Post.

"I think Malvo's full of crap," Lt. Bruce Guth, a Fairfax County, Va., homicide detective who headed the task force that helped convict Malvo, told the newspaper. "He's changed his story at least five or six different times."

Despite Guth's skepticism, officials at the Montgomery County Police Department in Maryland have confirmed to ABC News that they will "definitely" send detectives to interview Malvo about his latest claims.

The interview with Malvo is not the only crime case Shatner will be tackling in coming months. According to A&E, "Aftermath," a show that "takes an in-depth look at what happens when people are tragically or infamously transformed from unknown citizens into household names overnight," will also include interviews with subway shooter Bernhard Goetz, the brother of Unabomber Ted Kaczynski, the daughter of Randy Weaver, and Mary Kay Letourneau, a Washington state teacher who had a sexual relationship with a student and later married him.