CHICAGO (AP) — A suburban Chicago man who was alleged to be a Hamas leader has filed a federal lawsuit claiming U.S. government monitoring of his economic transactions is unconstitutional.

The Chicago Tribune reports that Muhammad Salah of Bridgeview filed the lawsuit Wednesday. Salah was imprisoned in Israel for 4 1/2 years after police who searched his East Jerusalem hotel room found $95,000 in cash they said was earmarked to bankroll terrorism.

He went on trial in 2007 and was acquitted of racketeering conspiracy but convicted of obstruction for lying under oath about the fatal Hamas shooting of an American teenager. A federal judge in Chicago sentenced him to 21 months in prison.