A case was registered against Ram Singh on April 13, 1992 by the Anti-Corruption Branch after he was caught red-handed while accepting a Rs 2 lakh bribe.

His house was subsequently searched and various ``incriminating documents'' connected to different ``deals'' of the Singhs was recovered. Following this two more criminal cases were registered against the couple on April 24, 1992 and July 13, 1992.

According to the FIR, Savitri had acquired assets amounting to Rs 9,67,375.45 which were disproportionate to her source of income. She was an income tax inspector in New Delhi from 1969 to 1992. During this period she acquired land in Bhopal and Kakuli village in Farrukhabad, bought a flat at BH-10B in Munirka, invested money in plots at Greater Noida, invested in the Ghaziabad Development Authority, took FDRs at Bank of India's Bahadur Shah Zafar Marg branch, bought shares, UTI units and also hired lockers in various banks all over Delhi.

The CBI has alleged that Ram Singh, while functioning as a public servant from January 1, 1985 to April 13, 1992 ``entered into a criminal conspiracy with his wife ... to acquire assets from dubious/ questionable means.'' Investigations revealed that both had assets in their names, the names of their children and relatives ``... which are highly in disproportion to their known sources of income for which they could not render any satisfactory explanation.''

According to the CBI, as of January 1, 1985 the husband and wife had assets worth Rs 4,35,073.49. During the check period from January 1, 1985 to April 13, 1992 their combined income amounted to only Rs 15,25,839. While their approximate savings for the period was calculated to be around Rs 7,74,293, they were found to have assets worth Rs 65,32,774. The CBI has calculated the total disproportion in assets to be Rs 53,23,408.

Investigations also revealed that Savitri operated bank accounts under three names: Savitri Singh, Savitri Devi and Raj Kumari Singh. According to the investigating agency the couple operated 66 bank accounts.

The offences are punishable under Section 120-B (criminal conspiracy) of the Indian Penal Code read with Section 13(2) read with Section 13(1)(e) of the Prevention of Corruption Act, 1988 and under Section 193 (false evidence), 467 (forgery of valuable security) and 471 (using as genuine a forged document) IPC.