One of three men charged in an attempted home invasion last month in Roanoke County is now facing a federal charge of conspiring to kidnap the resident and hold her for ransom, according to a criminal complaint filed in federal court in Roanoke.

Mohammed Hussein Guhad is being held in the Roanoke County-Salem Jail without bond.

The FBI and Roanoke County police are still investigating, and no one else has been federally charged.

Authorities also are investigating whether Guhad and the other men also had plans to kidnap a second woman, according to the affidavit and an earlier search warrant filed in Roanoke County Circuit Court.

Guhad, Joshua Kasongo and Luke Elbino were arrested by police April 6, after an attempted home invasion in Southwest Roanoke County.

The men went to a house on Trelawny Trail and knocked on the door, according to the affidavit filed this week in U.S. District Court.

When a woman answered, Guhad said he was conducting a survey for the Red Cross, the criminal complaint says.

She tried to shut the door, but one of the men used his arm to stop the door from closing. The man removed his arm and she closed and locked the door and then called 911.

Police responding to the call stopped the suspects' vehicle. The officer found rope, binoculars, handcuffs, a BB gun and a tire iron in the car, according to the affidavit and search warrant.

The men were each charged with entering a house with intent to commit murder, rape, robbery or arson, according to court records.

Kasongo and Elbino were released on $50,000 bond.

An informant has told police that Guhad said he and the other men had planned to kidnap the woman because they believed her husband was wealthy, the affidavit says.

The informant also told police that Guhad said he and others had planned to kidnap another woman who lives in the same area.

A search of a laptop found in the vehicle revealed that someone had researched the women on whitepages.com, mapquest.com and the Roanoke County real estate Web site.

On March 26, an officer had seen Elbino and Guhad using a laptop in a parked vehicle on Hunt Camp Road in Southwest Roanoke County, near where the second woman lives.

That officer told the men to leave the area, the search warrant said.

Guhad also told the informant that he and some other people had kidnapped a woman in Ohio and held her for a $50,000 ransom, the affidavit says.

It is unclear whether that incident actually happened because Roanoke County police referred questions to the FBI, and the head of the FBI's Roanoke office could not be reached Thursday afternoon.