The Tamil Nadu government is in for a big investigation. The Madras High Court has ordered the Central Bureau of Investigation (CBI) to look into a big corruption case. This case is about the procurement of transformers, and it's estimated to have caused the state over 397 crores in losses.

The case started with a complaint from an anti-corruption group called Arappor Iyakkam. They claimed that the tender process for the transformers was rigged, and that a group of companies worked together to inflate the prices. This would have meant that the state government had to pay more money than it needed to.

The Arappor Iyakkam group said that they had evidence of this scam. They claimed that 34 companies that bid for the transformers all quoted the same prices. These prices were much higher than what the transformers were worth in the market. The group believed that this was proof that the companies were working together to cheat the government.

The court has ordered the state's Directorate of Vigilance and Anti-Corruption (DVAC) to hand over all the documents related to the case to the CBI. The CBI will now investigate the case and try to find out if there was any wrongdoing. They will look at the tender documents, the prices that were quoted, and any links between the companies that bid for the transformers.

This case is not the only one that Senthil Balaji, a former minister, is facing. He's also being investigated for his involvement in a money laundering case. The Enforcement Directorate (ED) has accused him of taking money from people in exchange for jobs. Balaji has denied all the allegations and says that he will face the cases in court.

The opposition in Tamil Nadu has been making corruption a big issue in the state's recent elections. They believe that corruption is a major problem in the state, and that it's affecting the people who live there. The case of the transformer procurement will be an important one to watch, as it could show whether the government is serious about tackling corruption.

The CBI will now take over the investigation, and it will be interesting to see what they find. The case is a big one, and it has the potential to expose some serious wrongdoing. If the CBI can prove that there was a scam, it could lead to some people being held accountable for their actions.