Lorenzo's attorney said they're trying to link his client to one man's death and another's disappearance.

Steve Cole, a spokesman for the U.S. attorney's office, confirmed a warrant was being served at 213 W. Powhatan Ave. He declined to offer specifics, however, including which law enforcement agency was conducting the search.

At least two Tampa Police Department Crime Scene Unit vans were parked at the home.

Lorenzo's attorney, Donald Harrison, said authorities refused to tell him what they were looking for, but said they were focused on a garage area in the back of Lorenzo's home.

He said until about a month ago, authorities hadn't told him they were searching for a link between Lorenzo and the death of Michael Wachholtz, 26, and the disappearance of Jason Galehouse.

Both men disappeared on Dec. 20, 2003. Wachholtz's body was found on Jan. 6, 2004, wrapped in a blanket in his Jeep.

Lorenzo remains at the Orient Road Jail awaiting trial in federal court on charges that he drugged and raped seven men. Harrison said that case likely will go to trial in October.

During previous searches, investigators removed carpet, computers, video cameras, calendars and other items from the home, Harrison said.

He said Lorenzo has complied with investigators' requests to search his furniture - which had been in storage - and his Jeep.

``What led them back here, I don't know,'' Harrison said.

He said the fact that investigators had to return to Lorenzo's home a fourth time is ``a good indication they ain't got anything on him.''

He said Lorenzo had pictures of the missing men in his house, but that they were from fliers passed out during the search for Galehouse and Wachholtz.

He again denied that his client knew the men.

``If they walked in front of him, he wouldn't know them,'' Harrison said.

Galehouse's mother, Pam Williams of Sarasota, gave Tampa police a DNA sample last month to check for any match with items seized in the searches of Lorenzo's house.

She said detectives this week took a DNA sample from Galehouse's father, who lives in South Venice.

She said a detective told her last month's search of Lorenzo's home pertained more to the Wachholtz case.

Williams, who believes her son is still alive, said detectives haven't shared any more information with her about her son's disappearance.

Reporter Anthony McCartney can be reached at (813) 259-7616.