Quincy Man Accused Of Mailing Letters Containing an Unknown Substance to Illinois Congressional Offices

SPRINGFIELD –  A Quincy man is accused of mailing hoax letters containing an unknown substance to Illinois Congressional offices.  Matthew Unglesbee was arrested on Sunday by federal authorities.  Prosecutors say the use of mail to threaten others, including the mailing of threatening substances, won’t be tolerated.  The case is being investigated by the FBI and the U.S. Attorney’s Office for the Central District of Illinois.