A major search operation has been launched after a violent child rapist escaped his escort on Friday. Cliff Lyons Dobbie, who is a restricted patient, absconded in Perth city centre while on community leave. He was convicted of raping a ten-year-old girl in Glasgow while on bail for sexually abusing a 12-year-old boy in 1990. The on-the-run sex offender is described as a white male, approximately 5ft 3in tall, of stocky and muscular build. He was last seen wearing white trainers, light blue ripped jeans, a salmon-coloured golf shirt and a light blue jumper.