Police have discovered evidence suggesting that Gurpreet Singh, the suspect in the murder of Swiss national Nina Berger, received money through hawala transactions. They are investigating the purpose of these payments and whether Singh was involved in a larger racket. The income tax department and Enforcement Directorate are also probing the source of the money. Singh, who enticed foreigners through his knowledge of astrology, allegedly used the hawala route to bring in large sums of money. The autopsy on Berger's body revealed that she died from strangulation, and the investigation is ongoing.