The Madhya Pradesh police, which arrested the accused in the shocking Ujjain rape case that made national headlines recently, on Friday said it took an extraordinary effort to crack the case, which involved interrogating hundreds of people, and scanning footage from over 700 CCTV cameras before they found links to the main accused Bharat Soni -- an auto driver who allegedly picked up the 15-year-old survivor from the Ujjain railway station, raped her, and left her half-naked and bleeding. "30-35 people were engaged in cyber investigation, no one slept for three to four days. When we were visiting the spot of the crime, he (accused) tried to run away. Policemen chased and caught him again," a police inspector told NDTV.