SPRINGFIELD – Police Officer Derek V. Cook will serve three months' suspension without pay from the Police Department in the wake of his guilty pleas last week to charges for attacking two superior officers during a station-house fight more than three years ago.

The suspension was imposed on Monday by Commissioner William J. Fitchet.

Cook pleaded guilty last week in District Court to two counts of assault and battery on a police officer. He agreed to pay $675 in fines and apologized to Lt. Robert Moynihan and now retired Sgt. Dennis M. O’Connor.

Cook also agreed to the conditions of his departmental suspension, which was separate from the court case. His agreement meant there was no need for a disciplinary hearing to be conducted, according to Sgt. John M. Delaney, an aide to the commissioner.

Delaney said it will be up to Fitchet to decide what Cook’s assignment will be when he returns to duty.

Charles W. Groce, Cook’s lawyer, confirmed Cook had agreed to the suspension.

Under the plea-bargained agreement on the court case, Cook was spared prosecution on a more serious felony wiretapping charge for which a conviction could have carried a prison term. The wiretapping charge alleged that Cook had illegally recorded on his cell phone portions of the altercation in February 2008 and events which followed.

Cook apologized to the two senior officers at the court hearing, stating, “I want to say sorry to them both as a police officer and as a man.” Each of the officers said they had sustained physical injuries in the incident which occurred after Moynihan asked to meet with Cook following roll call.

The fight occurred in February 2008, but the case dragged on unresolved during the administration of former district attorney William M. Bennett. When Hampden district attorney Mark G. Mastroianni discovered earlier this year that the case remained active, he vowed to get it back on track; his investigation wound up in Cook being charged with the wiretap count.