One of the firefighters, Christian Waugh, has already been fired and the other two, Tony DeLuca and Anthony Loscuito, have been suspended, awaiting further disciplinary action, according to a 28-page report released by Rose Gill Hearn.
In addition, the investigation found that Loscuito allegedly made false statements during the investigation into the Aug. 20, 2004, scandal at Ladder Company 33/Engine Company 75/Battalion 19, and his case has been referred to the Manhattan district attorney's office for possible prosecution, she said.
The woman has filed a ''notice of claim'' indicating an intention to file a lawsuit claiming she was ''restrained against her will, sexually sodomized, raped, physically and emotionally severely injured'' during the incident. However, Bronx District Attorney Robert Johnson declined to file charges in the case following a separate investigation.
The DOI found that the woman was first contacted via an Internet chat room by a firefighter using a donated computer in the Bronx firehouse in 2003. She would then occasionally call the firehouse and engage in ''phone sex'' with some of the men.
During one of those calls on the evening of Aug. 19, 2004, DeLuca allegedly invited the woman to the firehouse the following morning, telling her to arrive after 2 a.m.
''They schemed so that she would arrive after the chiefs had gone to sleep in the firehouse,'' said Gill Hearn.
The investigation found the woman was at the firehouse from about 4:30 a.m. to about 5:15 a.m. During that time, DeLuca, Waugh and Loscuito separately engaged in a variety of sexual activities with the woman in a lounge in the basement of the firehouse, the report said.
The report also included several recommendations, including that the Fire Department more rigorously and consistently enforce regulations; more forcefully discipline misconduct and repeated misconduct; and require that an officer be awake and supervising each firehouse at all times.
In addition, the report recommended more formal training on FDNY regulations and remedial training and re-enforcement of the housewatch rules.
''I think that they should be terminated,'' Gill Hearn said of the two firefighters still on the job, although she emphasized that decision would be made by the fire department.
The report also noted that since the scandal erupted in August, the department has taken steps to remove inappropriate items and furniture from housewatch areas, including beds, video games and televisions, and to remove inappropriate photographs and items with beer logos from firehouses.
The FDNY also has modified its computer-use policy, created and staffed a random drug-testing unit and has directed firehouses to change inappropriate nicknames such as ''Animal House.''
Neither the fire department nor the union representing the firefighters immediately responded to telephone calls seeking comment.