As soon as they had had their way and married each other, the couple began having problems. Behavioural expectations and professional jealousies have been identified conclusively, but religious issues have also been hinted at in a Central Bureau of Investigation (CBI) report. Most important of all was the involvement of a third person. This was Sanjay Singh, an immensely rich man, a classmate and friend of the then Prime Minister Rajiv Gandhi, and a prominent politician belonging to the ruling Congress party. Ameeta and Sanjay Singh had come in contact with each other in 1984, under circumstances that are not clear. Sanjay Singh was a married man with two children, and Ameeta also had been married for several years to Modi, although they had no children yet. Modi began to suspect that his wife was having an affair with Singh, and for reasons that are unclear, Ameeta seems to have chosen to feed his fears rather than allay them. Knowing that Modi sometimes read her personal diary when she was away from home, Ameeta used to "tease" him by writing details of her relationship with Sanjay Singh in that diary. After Modi was murdered, the diary fell into the hands of the police, and Ameeta explained the incriminating contents of the dairy in the following words: