ELMHURST – A woman reported last weekend that she received a yellow envelope addressed to a former DuPage Water Commission chairman that contained an unknown granular substance, Elmhurst police said.
The report was made 8:24 p.m. Saturday in the 600 block of East Butterfield Road, according to police reports.
The envelope did not have a return address. An FBI agent was called to the scene and determined there was no immediate danger or threat, police said.
The FBI took custody of the envelope for further examination.