BOSTON -- Several Boston police officers have been suspended in connection with a three-year investigation into steroid abuse that involved improper conduct at an after-hours club.

"I am disappointed with the actions of the officers disciplined in this matter. With this chapter finally closed, the department will move forward with improved policies and practices resulting from difficult lessons learned. We remain steadfast in our dedication to preserving the integrity of our department by taking every measure to prevent and when necessary uncover officer misconduct," Boston Police Commissioner Ed Davis said.

In all, 11 officers were disciplined, including two detectives. The discipline ranged from a written reprimand to an 80-day suspension.

Investigators identified 24 Factory Street in Hyde Park as an after-hours party location. The facility is no longer an after-hours club. But in 2006, police said it was used by disgraced Boston Police Officer Roberto Polido and other officers for sex and drugs, including steroids.

Polido pleaded guilty to his crimes, and two other Boston police officers were also charged in the corruption probe.

The Boston Police Department commissioner announced an end to the investigation and disciplined more officers for their role in the scandal.

"I am disappointed with the actions of the officers disciplined in this matter. With this chapter finally closed, the department will move forward with improved policies and practices resulting from difficult lessons learned. We remain steadfast in our dedication to preserving the integrity of our department by taking every measure to prevent and when necessary uncover officer misconduct," Boston Police Commissioner Ed Davis said.

Davis said the department has learned lessons from the investigation and that changes have been made.

"I'm exploring the possible of including steroid testing in the annual drug testing policy," he said.