"I have no hesitation in holding that the prosecution has miserably failed to prove the charges and all the accused are acquitted of the charges," said Judge OP Saini.
A Raja was reportedly in tears. "Justice has prevailed,"said M Kanimozhi, parliamentarian and daughter of DMK chief M Karunanidhi. Outside court, hundreds of their supporters had gathered in support.
The 2G scam has been described as India's biggest telecom scandal. A Raja , a former telecom minister, was accused of allocating airwaves and licenses for cellphone networks in exchange for kickbacks, causing the exchequer a loss of Rs. 1.76 lakh crore.
Named along with Mr Raja in the scandal were promoters and top executives of some of India's best-known telecoms. Ms Kanimozhi was accused of corruption too; the CBI said that a 200-crore bribe paid by a telecom to Mr Raja was deposited in a TV channel in Chennai that is owned in part by her.
Mr Raja was arrested in 2011 and spent nearly one year in prison before getting bail.