Lagos, Nigeria (CNN) -- The court date of a man held after deadly bombings in Nigeria has been postponed because of fears about his safety in custody, his lawyer said Monday.

Henry Okah is being held in a Johannesburg, South Africa, prison, but his lawyer, Rudi Krause, wants him separated from the general prison population for his safety, he said.

He is being charged under terrorism legislation, Krause said. Extradition has not been discussed, he added.

The prosecutor and police have applied for the hearing to be postponed to Tuesday morning, the lawyer said.

Okah is suspected of being an influential member of the group that took responsibility for the bombings that killed 12 people and injured 50 in Nigeria on Friday.

The Movement for the Emancipation of the Niger Delta, known as MEND, issued a statement Saturday saying it had given the Nigerian government advance warning.

The Nigerian Intelligence Service said Monday that nine people have been arrested and are being questioned in connection with the blasts Friday in the nation's capital, Abuja. Authorities are still seeking two men, identified as Chima Orlu and Ben Jessy, whom they accuse of being the "masterminds" of the plot.

But sources close to MEND told CNN that the two men are "not known to be MEND operatives or known to be active on the Niger Delta issue."

They also raised concerns about the nine other arrests, calling them an "attempt by the Nigerian government to be seen to act."

Nigerian President Goodluck Jonathan has appointed Andrew Azazi, his former chief of defense staff, to be the country's national security adviser in the wake of the bombings, Jonathan's office told CNN on Monday.

What are the answers to this following set of questions:

1. In which country is this?
2. Who is this about?
3. What did he do?
4. For what?
5. When does he go to trial?
6. Why?
7. According to who?
8. Who is he?
9. Where is he now?
10. Which country is that in?
11. What does his agent want?
12. From who?
13. Has removing him from that country been talked about?
14. When do they want his trial to be?
15. Who is advising the president on this?
16. Who is he?
17. How many people were hurt?
18. How many were fatally hurt?
19. What is MEND?
20. Who did they speak to?
1. Nigeria
2. Henry Okah
3. He is being charged under terrorism legislation
4. deadly bombings
5. It has been postponed
6. because of fears about his safety
7. his lawyer
8. Rudi Krause
9. Johannesburg
10. South Africa
11. him separated
12. the general prison population
13. No
14. Tuesday morning
15. Andrew Azazi
16. his former chief of defense staff
17. 50
18. 12
19. The Movement for the Emancipation of the Niger Delta
20. the Nigerian government