On Tuesday, Catholic groups decorated a Christmas tree in Mexico City in memory of the 43 missing students from Guerrero state.

Global News reported pictures of all students were hung on the tree as decorations while dozens of people participated in a group prayer and a candlelight vigil.

According to Fox News Latino, a group of activists were planned to light a Christmas tree to demand truth and justice regarding the missing students from the Ayotzinapa teachers college The 10-foot Christmas tree, decorated with the pictures of the students, was set to be placed at the Hemiciclo a Juarez monument.

Winner of the 2013 Cervantes Prize, Elena Poniatowska was able to light the tree and read a statement from the parents of the students.

It has been nearly three months since the students went missing during a fundraiser for their college. In the wake of looking for them, protesters stormed the streets, demanding to learn the truth of what happened to the students.

Throughout weeks of protests, there were different accounts of what really happened to the students until a final confirmation said the students were cremated by a drug gang. Yet, witnesses say the students were last seen being rounded up by police officers.

A story published  by Mexican magazine Proceso reported this week that the Mexican government knew that the 43 students would be attacked by police but failed to stop it.  Proceso's investigation found that leaked government documents show police were tracking down the students.

Mexican President Enrique Pena Nieto previously stated that the government was in no means involved in the kidnapping of Ayotzinapa's students.

"We have information that proves the federal government knew what was happening in the moment it was happening and participated in it," reporter Anabel Hernández told the Huffington Post. "The government has tried to hide this information."

The investigation was done in partnership with the University of California at Berkeley's investigative reporting program.

The students went missing on Sept. 26.