A house in Utah and three storage units were searched by FBI which are probably connected to the man sickened by the toxin ricin found in his motel room, but they haven’t disclosed what they’ve found.

Even though authorities believed they removed all the ricin found in vials in the motel room in the Las Vegas Strip motel last week where Roger Von Bergendorff, 57, had stayed, they wanted to search his home as well in Riverton, where he lived.

On Sunday the houses located nearby were evacuated as FBI agents dressed in hazardous-material protection suits, carefully searched the home outside Salt Lake City belonging to Thomas Tholen, Von Bergendorff's cousin.

No results were disclosed at a press conference, but FBI Special Agent Timothy Fuhrman repeated what it has been said for days: “There is no indication of any terrorist act or activity,” the Associated Press reports.

According to Tammy Ewell, who lives across the street, Bergendorff lived in the house for more than a year before moving to Las Vegas, a year ago.

Von Bergendorff stayed in the room where ricin was found last Thursday at an Extended Stay America hotel one mile west of the Las Vegas Strip.

The man was hospitalized on Feb. 14 with respiratory distress but nobody knew that he was exposed to ricin so the health district and police were not notified.

He has been unconscious so FBI wasn’t able to question him.  

It’s still unclear whether Von Bergendorff's respiratory distress is due to the ricin exposure.

Ricin is obtained from castor beans that are processed.

Castor beans were found by police officers in the room and powder in a small vial. Almost 500 micrograms of ricin can be deadly for an adult.

Ricin is not illegal to be owned, but it is illegal to processed it and use it in order to poison someone.

According to Las Vegas police, firearms and an "anarchist-type textbook" were also found in the room. The book was marked at a spot where there was information about ricin.

Fuhrman said that the investigators don’t know yet why Von Bergendorff would have ricin.