Delhi Police have arrested the accused of sexual assault of a 12-year-old girl in Pashchim Vihar area. A history-sheeter, the accused, Krishan (33), is involved in over four cases of murder, attempt to murder and burglary informed the police. “The accused is a 33-year-old man and has four criminal cases registered against him including that of murder. Further investigation underway,” said Shalini Singh, Joint Commissioner of Police.