Former air chief marshal S.P. Tyagi is “one of the 13 people we have filed an FIR (First Information Report) against”, AFP quoted Central Bureau of Investigation (CBI) spokeswoman Dharini Mishra as saying.
The FIR filed on Wednesday represents the first stage of an official police enquiry.
The CBI had filed a “preliminary enquiry” report last month into the alleged scandal, linking four companies, four Westerners and seven Indians to the bribery allegations.
Mishra said investigators had raided a total of 14 locations in the northern cities of New Delhi, Chandigarh, and Gurgaon.
India threatened to punish the Italian company Finmeccanica if any wrongdoing was uncovered and had put payments to the firm on hold last month.
Finmeccanica’s boss Giuseppe Orsi was arrested by Italian authorities after they started investigation into allegations that the group had broken the law by paying bribes to foreign officials.
However, Orsi’s lawyer termed his arrest as unjustified.
Italian prosecutors suspect that kickbacks worth around 10 per cent of the deal, or 50 million euros ($68 million), were paid to Indian officials to ensure AgustaWestland won the contract, according to Italian media reports.
Cash was allegedly handed to a cousin of the former Indian air force chief with more money funnelled via a web of middlemen and companies in London, Switzerland, Tunisia and Mauritius.
The chopper deal was cleared by Indian Prime Minister Manmohan Singh and the country has already received three of the choppers. The rest were to be delivered by the end of 2014.