De los Reyes was charged with membership in "La Liga Filipina", the political organization organized by Rizal, as well as being knowledgeable of the Katipunan, however, he denied all of this. de los Reyes, however, sold types to Emilio Jacinto for the Katipunan's printing press, and he later claimed that he made a financial contribution to the "Liga". de los Reyes also claimed that while he declined when Julio Nakpil asked him to join the "Liga", he offered to give Nakpil a thousand pesos to purchase revolvers from someone on board the steamer "Salvadora", and that he offered his services as a soldier.