KATHMANDU: Police nabbed a man for his alleged involvement in a robbery case, after three months of the crime, on Thursday. The 28-year-old Bharat Shrestha from Dharan Sub-Metropolitan City-8 in Sunsari was arrested for robbing Sharmila Sunuwar, a permanent resident of Manahari-7 in Makawanpur, of Rs 20,000 cash and a mobile phone on June 24, police said. Shrestha was currently residing at Jadibuti of Kathmandu. Police are investigating into the case.