K Surendran, BJP's Kerala president, has alleged that there were dozens of protocol breaches during Ram Nath Kovind's visit to the state capital.
The state BJP president visited the Metroman at his residence on Friday.
In her post that has been retained even after 24 hours of protests, Resmitha Ramachandran has said that 'death doesn't make a person holy'.
The voice samples of BJP Wayanad district secretary Prashant Malavayil were taken earlier.
BJP on Tuesday announced a major organisational reshuffle in Kerala; actor-politician Krishna Kumar elevated to national council.
The BJP is set to celebrate nationwide the 20th anniversary of Narendra Modi becoming the chief minister of Gujarat on October 7.
Voices of both Surendran and Janadhipathya Rashtreeya Party leader Praseetha need to be examined, a court ruled on Friday while considering the case.
The case was registered after it surfaced that money was paid to the BSP candidate K Sundara to withdraw his nomination at the Manjeswaram assembly constituency in the April 6 assembly polls.
Latest reports had said that the Member of Parliament could be the party's choice as the new president of its Kerala unit.
With Suresh Gopi at the helm, the party aims at a major overhaul of the state organisation from the lowest electoral booth-level.