-- Paul Merle Eischeid, one of the U.S. Marshals Service's "15 Most Wanted" fugitives, is no longer on the run.

Eischeid, 39, was captured Thursday in Buenos Aires by Argentine authorities, according to a statement released by the U.S. Department of Justice.

Federal law enforcement officials added Eischeid to the Most Wanted list in 2007, when he fled after being arrested in a 2001 slaying that the Marshals Service called one of the "most grisly" in recent American criminal history.

The Marshals Service originally apprehended Eischeid -- described in the Justice Department statement as a former stockbroker and member of the Hells Angels motorcycle gang -- in 2007 for questioning in the 2001 murder of 44-year-old Cynthia Garcia of Phoenix, Arizona.

Garcia was attacked while attending a party at the Hells Angels' clubhouse in Mesa, Arizona, severely beaten, thrown in the trunk of a car, and taken to the desert where she was stabbed and left to die, said David Gonzales, U.S. marshal for the Arizona district.

Based on Eischeid's career as a stockbroker and his relatively clean criminal record, he was released on his personal recognizance and placed on federal pretrial release with electronic monitoring, the agency said.

On 2003, Eischeid was arrested after being indicted in a separate federal investigation on drug trafficking and organized crime charges, including counts of kidnapping and murder. During their investigation, agents of the Bureau of Alcohol, Tobacco, Firearms and Explosives learned Eischeid was wanted in connection with Garcia's death.

But by then, Eischeld had removed his monitoring device and he later fled Arizona, federal authorities said.

With the help of Interpol, investigations lead by the U.S. Marshals Service and Diplomatic Security Service in Argentina developed specific information on Eischeid's possible whereabouts.

"Eischeid's crimes were horrendous and his potential for continued violence made his arrest a priority for the U.S. Marshals," said Stacia A. Hylton, director of the U.S. Marshals Service.

"His capture is both significant and rewarding, and we thank our domestic and international partners for their tireless persistence in bringing this fugitive to justice," added Hylton in a statement issued by the Marshals Service.

Since March 2010, five of the 15 fugitives on the U.S. Marshals 15 Most Wanted list have been captured, according to information on the agency's website.