Oslo, Norway (CNN) -- At a prize ceremony honoring peace, Adan Cortes says violence and injustice sent him rushing toward the stage.

In a matter of seconds, the 21-year-old Mexican student's face was seen around the world last week as he stood in front of Malala Yousafzai at the Nobel Peace Prize ceremony in Oslo, Norway.

"Please Malala, Mexico," he repeated as he unfurled a Mexican flag on the stage at Oslo's City Hall, where the 17-year-old laureate was about to become the youngest person ever to receive the prestigious award.

Oslo police have come under fire over the incident, with critics asking how someone who wasn't on the ceremony's guest list managed to slip through security checkpoints and make it to the front of the room, standing just steps away from Yousafzai and other dignitaries before security hauled him out of the auditorium.

Speaking to CNN at an Oslo detention center on Sunday, Cortes said he knows it was a drastic move. But he felt like he had no choice and wanted only a few seconds to speak about Mexico's problems on a global stage.

"My motivation was to show solidarity with all the things that have happened in my country, ultimately, well, the 43 missing students, who are suspected to be dead and burned, that was my main motivation," he said. "I am tired of so many injustices that we have lived in Mexico, for decades."

The students' case has sparked national outrage in Mexico and drawn global attention to the country's continued struggles to deal with police corruption and drug-related violence.

1. Who was receiving the Nobel Peace prize?
2. how old was he?
3. who slipped through security?
4. why was he there?
5. what country?
6. how old was he?
7. his occupation?
8. where did this happen?
9. Where is he now?
10. What was his main motivation?
11. Who in particular is he talking about?
12. Were they thought to be alive?
13. How long were these injustices thought to be going on?
14. What kind of corruption does the country struggle with?
15. Do they deal with violence also?
16. what kind?
17. Where in Oslo was the cermony?
18. WHy were the police under fire?
19. What does the ceremony honor?
20. Who spoke with Cortes in detention?

Provide a numbered list of answers.
1. Malala Yousafzai
2. 17-year-old (she)
3. Adan Cortes
4. to show solidarity with all the things that have happened in my country
5. Mexico
6. 21-year-old
7. student
8. Oslo
9. an Oslo detention center
10. to show solidarity with all the things that have happened in his country
11. 43 missing students
12. no
13. for decades
14. police corruption
15. yes
16. drug-related
17. City Hall
18. A man not on the guest list was close to Malala
19. Peace
20. CNN