The existence of the Katipunan eventually became known to the colonial authorities through Teodoro Patiño, who revealed it to the Spaniard La Font, general manager of the printing shop "Diario de Manila". Patiño was engaged in a bitter dispute over pay with a co-worker, Katipunero member Apolonio de la Cruz, and exposed the Katipunan in revenge. La Font led a Spanish police lieutenant to the shop and to the desk of Apolonio, where they "found Katipunan paraphernalia such as a rubber stamp, a little book, ledgers, membership oaths signed in blood, and a membership roster of the Maghiganti chapter of the Katipunan."