Dr Mahathir Mohamad is making excuses to decline participation in the royal commission of inquiry (RCI) involving the sovereignty of Pulau Batu Puteh as he has committed an "unforgivable sin", alleged an Umno leader.

According to Umno supreme council member Mohd Puad Zarkashi, the former premier's objection to former chief justice Md Raus Sharif leading the RCI is akin to him being afraid of his own shadow...