(CNN) -- The United States breached international law by executing a Mexican national without having granted him consular access, the U.N. High Commissioner for Human Rights said Friday.

Navi Pillay, in a statement, said she deeply regrets the execution of Humberto Leal Garcia, after a 5-4 decision by the U.S. Supreme Court denied him a stay of execution Thursday night.

"The execution of Mr. Leal Garcia places the U.S. in breach of international law," said Pillay, who is on an official mission in Mexico. "What the state of Texas has done in this case is imputable in law to the U.S. and engages the United States' international responsibility."

Pillay said Leal was not granted consular access, which -- as a foreign national -- was his right under Article 36 of the Vienna Convention on Consular Relations.

The denial of access raises concerns about whether Leal got a fair trial, Pillay said.

Leal, who was convicted for the 1994 rape and murder of a 16-year-old girl, was executed Thursday evening by lethal injection in Texas.

Federal officials, including the Obama administration, had tried to persuade Texas Gov. Rick Perry to delay the execution. "The secretary herself is quite disappointed in the outcome in this case," said State Department spokeswoman Victoria Neuland about Secretary of State Hillary Clinton.

"The U.S. government sought a stay of Leal's execution in order to give the Congress time to act on the Consular Notification Compliance Act, which would have provided Leal the judicial review required by international law."

Answer the following questions:
1. Who was killed?
2. What country was he from?
3. In which state did the issue occur?
4. What did Garcia have a right to under an article of the Vienna Convention?
5. What number article details this right?
6. What was it about Garcia that entitled him to this right?
7. What crime did Garcia commit?
8. And what else?
9. Of whom?
10. How was he put to death?
11. True or False: Pillay upholds the decision to execute Garcia.
12. What did she say she feels about it?
13. What body refused to grant a stay of execution?
14. How many voted in support of granting the stay?
15. When was the decision made?
16. What is Pillay doing in Mexico?
17. Who did officials fail to get to delay the execution?
18. Who was dissappointed by what happened?
19. Who is the Secretary?
20. Hillary who?
21. Who was her spokesperson?
1. Garcia
2. Mexico
3. Texas
4. consular access
5. 36
6. oreign national
7. rape
8. murder
9. 16-year-old girl
10. lethal injection
11. false
12. regrets
13. U.S. Supreme Court
14. Nine
15. Thursday
16. official mission
17. Federal
18. secretary
19. Hillary
20. Clinton
21. Victoria