In an outcome described as “shocking,” “painful,” and “unspeakably sad,” Colombian voters on Sunday rejected a landmark peace deal that would have ended a deadly 52-year war between the government and FARC guerillas.

Turnout was reportedly low, and the win was narrow, with the “No” vote leading by less than one percentage point, 50.2 percent to 49.8 percent.

“Today will be remembered by history as the moment Colombia turned its back on what could have been the end of a war that for more than 50 years devastated millions of lives,” said Erika Guevara-Rosas, Americas director for rights group Amnesty International. “Even though it was imperfect, the accord was a sure path to peace and justice.”

According to TeleSUR:

On Twitter, journalist and commentator Vijay Prashad also made note of the geographic breakdown:

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CNN reported:

Indeed, Reuters quoted one “No” voter who said: “We never thought this could happen. Now I just hope the government, the opposition, and the FARC come up with something intelligent that includes us all.”

The BBC reported that “Most of those who voted ‘no’ said they thought the peace agreement was letting the rebels ‘get away with murder’.”

But others said that a campaign of fear won the day:

Colombian President Juan Manuel Santos, “[p]utting on a brave face after a major political defeat,” as Reuters put it, said Monday that he “won’t give up.” He sent government negotiators back to Cuba on Monday morning to meet with FARC leaders, and “said he would meet with Colombia’s opposition, led by former president and senator Álvaro Uribe, a mortal enemy of the FARC who has gained powerful new leverage over any potential attempt to rewrite the peace deal,” the Washington Post reported. 

FARC leader Rodrigo Londoño (known as “Timochenko”) also reiterated a commitment to peace, saying on Sunday: “The FARC reiterates its disposition to use only words as a weapon to build toward the future. To the Colombian people who dream of peace, count on us, peace will triumph.”

Both sides said the historic ceasefire, reached in June, would remain in place.