According to police sources, before Gurpreet allegedly murdered 36-year-old Berger, his father Arjun Singh travelled to Switzerland to threaten her family over a monetary dispute involving Rs 8 lakh.
The Swiss woman, who was found dead with her limbs and legs bound with chains near a school in West Delhi on October 20, was smothered as she suffered for 20 to 30 minutes before her death, sources.
The 33-year-old Delhi man arrested for allegedly killing a Swiss woman here had promised precious gemstones and offered astrology tricks to other foreign women too to befriend them, police sources said on Thursday.