Expressing concern over Electronic Voting Machine (EVM) tampering issue, former Uttar Pradesh chief minister and Samajwadi Party national president Akhilesh Yadav on Saturday said the Election Commission should answer the cases of EVM tampering issue and demanded that ballot papers should be used in future elections.

"The EC should answer the cases of EVM tampering issue. In future we want that elections should be conducted using ballot papers," Akhilesh said.

BSP chief Mayawati on Friday had said that the BSP might consider allying with other aniti-BJP parties in its fight against the EVM tampering issue.

"BSP has no reservation in taking help of anti-BJP parties in fight against EVM tampering issue," she added.

On 13 April, the Supreme Court issued a notice to the Centre and the Election Commission for not using EVMs with voter verified paper audit trail (VVPAT), based on a plea filed by the BSP.