Continuing to build a case against the man accused of drugging and torturing seven men and suspected of killing at least two others, authorities disclosed in court papers that investigators who searched Lorenzo's house found blood with ``numerous DNA profiles.''

Lorenzo is being held on federal charges that he drugged and sexually assaulted seven men. Last week, authorities charged an associate, Scott Schweickert, as an accessory after the fact to drug-facilitated crimes of violence.

An affidavit filed in federal court says Schweickert told investigators he saw Lorenzo kill two men, Michael Wachholtz and Jason Galehouse, and helped him dispose of the bodies.

Police also are trying to determine whether Lorenzo and Schweickert had anything to do with the disappearances of as many as 10 men in the Tampa Bay area, Fort Lauderdale and Chicago.

Assistant U.S. Attorney Anthony E. Porcelli obtained a court order Thursday requiring Lorenzo to provide saliva and fingerprints. According to the prosecutor's motion, blood evidence found in Lorenzo's home ``has revealed numerous DNA profiles.''

Authorities on Friday refused to say how many profiles were found.

The mother of one of the missing men reeled when told about the DNA disclosure.

``Oh, my God. I felt myself just crumbling,'' said Julie Williams, whose son, Bradley, a Tampa postal worker, disappeared in 2001.

Williams and her husband, who live in Ferrysburg, Mich., provided DNA to police this month. She said she hasn't heard whether any results have tied her son to the case.

``This is just what I've been waiting for,'' she said.

The 32-page affidavit written by Drug Enforcement Administration Agent Scott A. Albrecht details Lorenzo's and Schweickert's involvement in an underground sexual bondage culture. The agent's description of the case suggests a union of psychopaths who probably have more victims than law enforcement will ever discover, according to a former FBI profiler.

``Police are going to find a lot more victims'' if the allegations are true, said Joe Navarro, a retired FBI agent who served as a senior criminal profiler in the agency's Tampa office. ``People like that always leave a debris field of human suffering that's always wider, never narrower than what is known.

``The impulsive nature of these individuals is sometimes quite scary because they may go for a period of time where nothing happens, and just impulsively they will act out,'' Navarro said. ``And that really makes them extremely dangerous.''

Investigators who searched Lorenzo's home found what appeared to be blood on a number of ``large cobblestone- type bricks'' in the garage floor and in the soil surrounding the bricks, according to the affidavit. Investigators also found seven stained areas in the house that preliminarily tested positive for blood.

Investigators seized Lorenzo's living room floor, as well as a leather belt and plastic gloves that were identical to items shown in a photograph of Wachholtz's apparently lifeless body found in Lorenzo's computer, according to the affidavit.

According to Porcelli's motion, the seven victims described in the indictment against Lorenzo ``have advised law enforcement that they sustained injuries consistent with the loss of blood at the hands of the defendant at the defendant's residence.''

Lorenzo's attorney, Donald Harrison, could not be reached Friday afternoon for comment.

However, R.J. Trasorras, a private investigator working with Harrison, said Lorenzo's house has been searched several times, but authorities have not preserved it as a possible crime scene.

Trasorras, a former U.S. Secret Service agent, said Lorenzo has been in jail since November and that a friend has been living at the house intermittently since his arrest. ``What's going on at that house?'' he said. ``Is it secure? It it pristine? Anyone can go in there.''

Navarro, the retired FBI profiler, was asked by The Tampa Tribune to read the DEA affidavit. Navarro stressed that he didn't have any direct knowledge of the case and that his comments were directed only toward the allegations. ``I don't want to be labeling these guys specifically,'' he said.

The affidavit, he said, reveals a ``lethal cocktail'' of sadism, fantasy and psychopathy. ``These individuals are malignantly narcissistic, so they tend to devalue life,'' he said. ``They talk about life as if it were objects.''

Navarro said the affidavit is replete with evidence of psychopathic behavior.

``The use of drugs to overcome the will of individuals, the binding and torturing, the positioning of individuals in unnatural positions, which heighten the victimization and heighten the sense of power over them - that's all part of the illness of the psychopath,'' he said.

He said psychopaths often turn on each other and try to make the other look like his actions were worse.

The affidavit also described a June 2 search of Lorenzo's house at 213 W. Powhatan Ave. Investigators said they discovered gamma-hydroxybutyric acid, a depressant known as a ``date-rape drug''; methamphetamine; restraints; photographs of more than 20 men in various stages of bondage; and a folder of newspaper clippings about local missing people.

``There's going to be a lot of evidence, either in the form of photographs, artifacts or computer files, which will literally convict these individuals,'' Navarro said. ``They tend to collect and keep this sort of memorabilia so they can relive those kind of experiences.''

Katie Nielsen, whose son, Mark Thompson, has been missing nearly four years, provided a DNA sample to police in the hopes of finding answers about her son's disappearance. She said Friday that she hasn't heard anything.

``I still have that little bit of hope that Mark's not'' part of Lorenzo's case, said Nielsen, who lives in Clearwater. ``But I really think he is involved.''

Nielsen said the waiting makes her anxious.

``I don't know,'' she said. ``We'll see. I just pray for some answers.''

Reporters Valerie Kalfrin and Thomas W. Krause contributed to this report. Reporter Elaine Silvestrini can be reached at (813) 259-7837.