IMPHAL, Feb 11: Narcotics and Affairs of Border, Manipur in co-ordination with 7th Assam Rifles NCB and Churachandpur District Police destroyed 15 acres of illicit poppy cultivation in Sinjang village areas of Thanlon Sub-division in Churachandpur District on February 5 to 10, said a Police release. A case has been registered at NAB-PS and investigation is going on.