A lawyer for three Irishmen accused of helping Colombian rebels has accused a key prosecution witness of lying.

One of the star witnesses in the case against three Irishmen accused of training Colombian rebels in terrorist techniques refused to testify today because he said he feared for his life.

Prosecutors in the trial of three men accused of training rebels in Colombia are set to present more witnesses this week to try to prove the men trained rebels in the jungles of southern Colombia.