The parents of the missing Mexico college students are refusing to stop looking for their children - with hopes of finding them alive - despite the recent discovery of student Alexander Mora Venancio's remains.
"My son, wherever you are, I'll keep looking for you, even if my heart is breaking by the news," one father said to CNN.
Authorities believe the students' remains were burned at a landfill, then placed inside plastic bags and thrown into a river after they went missing on Sept. 26.
So far, Venancio, 19, is the only student whose remains were found.
"If these murderers think that with a DNA match of one of our boys, we are going to stop and cry, we want to tell them that they have been mistaken, that after today, this day of action will continue until we find the remaining 42 alive," Felipe de la Cruz, a spokesman for the students' families, said to CNN after the identification of the remains were confirmed.
The parents remain optimistic about finding their children and those who are responsible for the crime - including Venancio's own cousin, who believes the DNA match was incorrect.
"I don't believe he's dead," his cousin said to CNN. "What about the rest of them? I feel like they're just deceiving us."
Authorities are continuing to work with the concerned parents to solve the crime.
"Based on my own conviction and the orders of the President, we're going to continue with this investigation until we detain all the culprits," Mexican Attorney General Jesús Murillo Karam said to CNN.
So far, the only charged "probable mastermind" in the case is Iguala Mayor Jose Luis Abarca, who is being held in federal prison on six counts of aggravated homicide and one count of attempted homicide.