ALBANY, N.Y. -- An Albany man with a lengthy criminal rap sheet now stands accused of murder — the fifth crime of which he's been accused in less than a year.

Richard Quinn, 64, was arrested Monday for the stabbing death of Marc Douglas. Police say Quinn stabbed Douglas during a dispute on Grand Street. Douglas later died at Albany Medical Center.

Quinn pleaded not guilty on Tuesday morning and was sent to the Albany County Jail, pending his next court appearance. Court documents later showed that Quinn could have been sent to the jail months ago for various crimes in Albany.

Quinn was first arrested back in September, shortly after moving to the area from Buffalo. He was eventually convicted of an assault at 145 Quail Street, where he punched a woman in the head and then smacked another man with a metal pole. At the time, Judge Gary Stiglmeier sentenced Quinn to two years' probation.

Then in early March, Quinn was arrested again and accused of stealing a pack of razors from the downtown Albany Rite-Aid store. Court records show that he was again released on probation, despite the district attorney's office requesting he be jailed on $3,500 bail.

In the same month, Quinn was arrested a third time for threatening his roommate with a knife at their West Lawrence Street apartment. Quinn was arraigned, and once again set free under the supervision of Albany's probation department.

Then in May, Quinn violated his probation. The details of the violation were not made public in court documents — but at that point, the district attorney's office requested that Quinn be sent to jail without bail for his repeated encounters with police. Instead, Stiglmeier sent Quinn back out on the streets with supervision of the probation department.

Albany Police, who said Quinn has been a well-known acquaintance ever since moving to the city, offered no criticism of any other law enforcement departments Tuesday. Spokesman Steve Smith reiterated that police have tried to keep Quinn from hurting anyone.

"We have a job to do, and we're going to continue to do our job," Smith said. "We have a great relationship with probation, and we have a great relationship with the district attorney's office here in Albany.

"We do everything we can to make sure our community is safe, and make sure that violent people are in jail," said Smith.

The Albany County district attorney's office confirmed its requests to put Quinn in jail, but declined to comment on the matter Tuesday.

Quinn is being held without bail at the Albany County Jail. Stiglmeier was unavailable for comment Tuesday afternoon.