Kolkata, May 1 -- The Election Commission of India (ECI) on Friday deployed additional security forces to strengthen protection outside strongrooms in West Bengal after the ruling Trinamool Congress (TMC) and the Bharatiya Janata Party (BJP) clashed over allegations of Electronic Voting Machine (EVM) tampering and compromised security late on Thursday night.

Officials aware of the matter said that additional forces have been added to the three-layer security outside strongrooms, comprising state police and Central Armed Police Forces (CAPF).

"Triple-layer security has been deployed at all counting centres with specialised patrols in vulnerable zones. Only authorised personnel with QR-coded IDs would be permitted to enter the counting ce...