11.   Amnesty urged continued political pressure on Nigeria to prevent further executions.

12.   He had taken no legal steps to prevent his execution, and had told his lawyer not to put on a defense during the penalty phase of his trial.

13.   His lawyers had cited a history of mental illness to prevent his execution.

14.   His lawyers have, to no avail, cited a history of mental illness to prevent his execution.

15.   It urged continued political pressure on Nigeria to prevent further executions.

16.   Jamaica and Trinidad and Tobago recently withdrew from international accords which they said were being abused by convicted killers to prevent executions.

17.   Justice Secretary Hernando Perez last week said he opposes the death penalty and said he will try to prevent executions in his term.

18.   Mandela said he had tried to prevent the executions by directly appealing to Nigerian leader Gen. Sani Abacha.

19.   Then-Chinese Premier Zhou Enlai personally intervened to prevent his execution.

20.   They also say the law has enough legal safeguards to prevent the execution of innocent people.