Five men were caught and sentenced on various robbery charges.
He was under protective custody and is facing a robbery charge, the police said.
He had been released from prison in June 1985, after serving six years on a robbery charge.
But he will be through, if they hold him on a robbery charge.
The robbery charges carry maximum terms of 5 to 25 years.
They said he had a 10-year criminal record, beginning with an attempted robbery charge in 1987.
He was convicted on the robbery charge and served five years.
He faced a robbery charge in 1997, but it was later stayed.
The robbery charge against him stems from his taking the gun, the police said.
For most of that time, he was incarcerated on a robbery charge, the police said.