Convicted murderers mistakenly freed from prison

Joseph Jenkins was serving a 50-year sentence for murder and armed robbery.

(CNN) -- The state of Florida is asking for help in locating two former prison inmates that they realized should still be current inmates.

Charles Walker and Joseph Jenkins, both 34, are considered "escapees" by authorities, but their prison break wasn't exactly a scene out of "The Shawshank Redemption."

Charles Walker was serving 15 years for murder. (right)

Walker and Jenkins -- both convicted murderers -- separately walked out of the Franklin Correctional Institution located on Florida's panhandle "in accordance with Department of Corrections policy and procedure," according to Department of Corrections Secretary Michael Crews.

"However, both of their releases were based on fraudulent modifications that had been made to court orders," he said.

Authorities would not elaborate further.

Law enforcement learned of the situation Tuesday.

Walker, who was freed October 8, and Jenkins, freed on September 27, are both former residents of Orlando, and the Orange County sheriff's office worries both may have returned.

"They committed violent crimes," Capt. Angelo Nieves told CNN. "The best thing for them to do is to turn themselves in."

Jenkins was serving a 50-year sentence in a 1998 murder and armed robbery and got an extra five years for a 1997 auto theft. He had been incarcerated since 2000. Walker was serving a 15-year sentence for a 1999 murder and had been in custody since 2001.

While Nieves and other law enforcement search for the inmates, Crews says he'll be conducting a "vigorous and thorough review" of other such prison releases to make sure there aren't others out there who shouldn't be.