The fact that the MACC is only now probing the incidences of corruption, as testified by a witness in the Ultra Kirana Sdn Bhd trial, shows the agency needs a "large-scale shake-up", said Bagan MP Lim Guan Eng.

In a statement today, he said what is even more baffling is that the witness who testified to payments made to top politicians is an MACC witness.