Earlier, the CBI had collected voice samples of Tapas Saha's former personal assistant Probir Koyal, while the Enforcement Directorate (ED), which is conducting a parallel investigation in the school jobs case, collected voice samples of Sujay Krishna Bhadra. Were. , a key accused in the case.

Sources said investigating officers recently received a mobile conversation in which a voice allegedly belonged to Saha. Now his voice samples have been taken to confirm this.

In April last year, the CBI had conducted a marathon raid on Saha's residence and office in Nadia district.

Their mobile phones were also confiscated by the central agency team.

The Anti-Corruption Branch of West Bengal Police has arrested Probir Koyal for his alleged involvement in the case. Koyal has reportedly claimed that Saha is being framed to hide his misdeeds.

While admitting that he had collected the money in exchange for jobs, Koyal also claimed that he had handed over the cash to the Trinamool MLA.