Conversation so far:
Why was Saro-Wiwa arrested?
he was arrested and accused of incitement.
Was he placed in jail?
was imprisoned for over a year before being found guilty and sentenced to death.
How was he executed?
hanging by military personnel.
What year was he executed?
1995.
Was there anything significant about the execution?
the rest of the Ogoni Nine were killed by hanging by military personnel.
Are there any other interesting aspects about this article?
Some of the defendants' lawyers resigned in protest against the alleged rigging of the trial by the Abacha regime.
What is the Abacha regime?
CANNOTANSWER.

Question: Did anything notable happen after his execution?
Self-contained rewrite: Besides the alleged rigging by the Abacha regime, did anything notable happen after Ken Saro-Wiwa execution?