Bhubaneswar/Berhampur: Former BJD MLA Bikram Panda, a key accused in the murder of BJP functionary and senior advocate Pitabash Panda, will undergo a voice spectrography test following allegations that he threatened a prosecution witness from Berhampur circle jail, police said.Panda allegedly made the threatening call from inside the jail using the mobile phone of former jail doctor Sushant Kumar Panigrahy. “We have completed the necessary legal formalities and are preparing to conduct Bikram Panda’s voice-matching test at the state forensic science laboratory,” Berhampur SP Abhinav Sonkar told TOI.The forensic examination will compare Panda’s voice samples with an audio recording purportedly containing the threat call. Voice spectrography, a scientific forensic technique, analyses speech patterns and acoustic characteristics to determine whether two voice samples belong to the same individual.In a related development, police on Tuesday interrogated Panda for a second time in connection with the case. Panigrahy was also questioned.A case was registered at Gosaninuagaon police station on Sept 15 against Panda, his associate Madan Dalai, and the former jail doctor Panigrahy following a complaint by the witness. Police alleged that Panda and Dalai threatened the witness on Aug 28 while they were lodged in jail in connection with the high-profile murder case.Rejecting the allegations, Panda maintained that he cooperated fully with the investigation. “The allegations against me are completely baseless. Police questioned me and I responded to all their queries,” Panda said after his interrogation. He was earlier questioned on Oct 6.Panda was arrested on Nov 6, 2025, along with 15 others in connection with the murder of Pitabash on Oct 6, 2025. He remained in jail for around 10 months before securing bail on Sept 1 this year.