 The deficit was financed through "tesobonos" a type of public debt instrument that reassured payment in dollars.The January 1994 Chiapas uprising, and the assassinations of the ruling party's presidential candidate in March 1994, Luis Donaldo Colosio and the Secretary-General of the party and brother of the Assistant-Attorney General José Francisco Ruiz Massieu in 1994, sent a disquieting message to investors.Public debt holders rapidly sold their "tesobonos", depleting the Central Bank's reserves, while portfolio investments, which had made up 90% of total investment flows, left the country as fast as they had come in.