SEE LATEST: Mistakenly Released Killer Back In Custody

02/01/2013 – 9 p.m.

CHICAGO (CBS) — The finger-pointing between Cook County officials intensified Friday as the search continued for a convicted murderer mistakenly released from jail.

Someone in the sheriff’s department allowed Steven Robbins, 44, an Indiana state prison inmate serving 60 years, to leave on Wednesday. He had been extradited to Chicago for a court appearance in an unrelated case.

But State’s Attorney Anita Alvarez says armed violence and cocaine possession charges against Robbins had been dismissed in 2007, and thus there was no reason to bring him here, despite a series of letters from the inmate demanding trial.

She blames sheriff’s police personnel.