Investigators spent hours inside and outside of a home in Peekskill on Wednesday.
Members of the FBI, Homeland Security and local city police were seen at 531 Union Ave.
At one point, investigators were seen removing several bags of evidence from the house.
The FBI has not returned News 12's request for a comment on the investigation.
A spokesperson for Homeland Security said the agency “is not currently conducting any operations in Peekskill," despite personnel wearing jackets identifying themselves with DHS.