A routine drive to clean up vacant sites in Bengaluru has helped Sampigehalli police crack the murder of a 28-year-old woman, who was allegedly killed by her husband. Her body was then dumped at an empty site. The accused, 32-year-old Sagar Chandra Rawat, a native of Bihar, has been arrested for allegedly murdering his 28-year-old wife, Anasuya Behera.