After the survey, DEC had started an exercise under which all 15 lakh non-existent voters were issued notices asking them to prove that they were "rightful residents" of the places they have shown in their addresses.
After only 1.99 lakh people submitted proof of residence and other required documents, DEC removed the names of 13.1 lakh voters who had failed to respond to its notices.
(With PTI inputs)
