The gunpowder was seized and lodged in the ordnance store.
From the en.wikipedia.org
The previous day police had discovered a store of ordnance, and Holmes was pleased.
From the telegraph.co.uk
The ship remained anchored there until 1864, serving the South Atlantic Blockading Squadron as an ordnance, hospital, receiving and store ship.
From the democratandchronicle.com
Why, they ask, did the army store so much heavy ordnance in such a densely-populated area, and in an arsenal that even the commander in charge admitted was badly maintained?