ONGC kidnapping: Assam Police review security in OIL, ONGC locations SECTIONS Share Synopsis On 21st April outlawed United Liberation Front of Asom (Independent) militants kidnapped three persons from a work over rig site of ONGC located within Lakwa T.E. Cholapather grant under Sivasagar district. Five militants came to the site and kidnapped the ONGC staff in an Ambulance kept in the site. Following the kidnapping of three employees of ONGC, Assam police has asked all Superintendents of Police of upper Assam districts to review the security arrangements of OIL and ONGC infrastructures under their jurisdiction, especially those located in interior places.