The Siemens saga rolls on and if Siemens management thought things would settle down, they need to have a long think. This case is getting messier and messier by the day.

First, the company's former chief executive Heinrich von Pierer has been forced to come out and deny reports that he arranged bribes after he had been fingered by witnesses. Still, that hasn't stopped him being interviewed by prosecutors. Significantly, the prosecutors are refusing to say whether he is under investigation.

Meanwhile, the allegations continue with claims in court that the company had paid bribes of as much as US$80 million to "intermediaries" to "ensure" a multi-million dollar business digitization of identification documents in Argentina.

All this coinciding with reports that the company might sue its former executive board for its involvement in the scandal which is also being investigated by the Securities and Exchange Commission and the US Department of Justice.