Sentence:  The maneuvers were held `` in secret '' after a regional seminar for the Minutemen , held in nearby Shiloh , Ill. , had been broken up the previous day by deputy sheriffs , who had arrested regional leader Richard Lauchli of Collinsville , Ill. , and <WSD>seized</WSD> four operative weapons , including a Browning machine gun , two Browning automatic rifles and an M-4 rifle . 
Meaning of the word marked with <WSD> tags:  take temporary possession of as a security, by legal authority