Kathmandu, September 10 Police have arrested four people on charges of stealing gold and silver jewellery and purchasing stolen jewellery. Those arrested have been identified as 29-year-old Sawan Kushwaha of Gaushala Municipality-5, Mahottari, currently residing in Jadibuti, Kathmandu Metropolitan City-32; 36-year-old Pabitra Limbu of Aathrai Rural…