NCW chairperson Rekha Sharma has written a letter to the Director General of Police (DGP) of Punjab to arrest the accused and submit an action report in three days. On Friday, a labourer from Bule Nangal village near Beas, Sukhdev Singh, allegedly tied his wife, Pinki (23) who was pregnant with twins to a cot before setting her on fire. Singh who was on the run after the incident was later nabbed by police.