 That same evening John probably set off for the Midlands with Catesby and his servant Thomas Bates, while the others moved into their positions, ready for the planned explosion the following day.At about midnight the authorities made a search of the House of Lords, and in the chamber's undercroft they discovered and arrested Fawkes, who was guarding the gunpowder the conspirators had placed there.As news of Fawkes's capture spread, particularly through the great houses of the Strand, Christopher deduced what had occurred and went to Thomas Wintour at the Duck and Drake inn, exclaiming "the matter is discovered".