Tata Group chairman Ratan Tata on Friday said action should be taken against anyone found guilty of wrong-doing in 2G spectrum scam for which the government should bring in an auditor and have an investigation.

However, he expressed concern over unsubstantiated media attacks being made apparently on the basis of unauthorised tapes.

"So, I think these are bad times. I wish the government would take a stand, bring in an auditor and have an investigation. Book people who are guilty of something," he told a television channel.

Tata said it was murky and confusing for him now. "Because just a couple of weeks ago, we were a sort of sitting on top of the summit or mountain top with President Obama showering praises talking about the maturity of having emerged and not an emerging force.

"And then we have somewhat slipped into a morass of series of allegations, unauthorised tapes being flooded, the media going crazy on alleging, convicting, executing. You are literally character assassinating."

The whole thing, he said, in so doing, there has been a smokescreen behind the so-called scam which really is out of turn allocation of spectrum, hoarding of spectrum by important players for free and things of this nature.

"Stop this sort of banana republic kind of attacks on whoever one chooses to attack on a basis unsubstantiated, even before the person has in, what I consider, every Indian's right namely to be considered innocent, until found guilty in a court of law, not on the street, not in this way."