Mohan was arrested in October 2009 from Deralakatta village near Mangalore from the house of his third wife Sridevi Rai.
The police recovered vials of cyanide, fake identity and visiting cards in various names, fake government seals and rubber stamps, gold ornaments and mobile phones from the house.
The police also found a diary where he had maintained a list of all the women he had approached.
He struck off the names of those he'd had no success with by marking their names in red. Of every 10 women he met, he apparently succeeded with two.