Twenty-two people have been arrested so far in connection with the attack on the Forest Range Office at Runikhata in Chirang district, police said on Monday, as authorities press ahead with the investigation using video footage and other collected evidence.
The arrests were confirmed by BTAD Inspector General of Police Vivek Raj Singh, who addressed the media in Bongaigaon.
IGP Singh assured that the investigation was being conducted carefully to avoid wrongful detentions.
"We assure that no innocent person will be harassed, but criminals will never be spared," he said.
He added that the situation in Chirang district had "almost normalised," though internet services in the district have not yet been restored. Singh said the matter of resuming internet connectivity would be discussed with the competent authority, and steps would be taken accordingly.
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The district administration has ordered a magisterial-level inquiry into the incident, with ADC Chirang Sangeeta Sarkar entrusted with conducting the probe.
Members of the public who wish to submit statements related to the incident have been invited to appear at the Forest IB at Runikhata on April 23, where their accounts will be formally recorded.
Sarkar appealed to all willing individuals to come forward and cooperate with the inquiry process.