According to DSP Ramesh Tamang at Siraha district police office, a joint investigation of Regional Police office Biratnagar, District Police Office Siraha and Area Police Office Mirchaiya revealed the truth of the murder mystery after 13 days of his killing.
The district police office is set to make public the details of the investigation in a while.
An unidentified gang had murdered Sah, 45, a cloth trader of Ram Nagar in Mirchaiya-2, at his residence on night of July 17during load-shedding hours while he was asleep in his room.
Police had then taken Sah´s second wife, Chandra, in custody for questioning. Sah was living with his second wife at Mirchaiya Bazaar.