The three men arrested for allegedly throwing acid on a 17-year-old schoolgirl in Delhi planned the attack meticulously down to the minute detail to mislead investigators, the police said in a statement on Wednesday. The teen has been hospitalised with serious injuries after the acid attack in southwest Delhi's Dwarka this morning. The police arrested all the three accused within 12 hours since the crime was captured on CCTV camera. The three have been identified as Sachin Arora, 20; Harshit Aggarwal, 19, and Virender Singh, 22.