New Delhi, Oct. 24 -- The "Sigma & Company" gang gained widespread notoriety on September 26 after gunning down a former chief of the Brahmarshi Sena at his residence in Bihar's Dumra and then issuing a note, titled "Nyaya, Sewa, Sahyog (justice, service, cooperation)", stating "eight crimes" committed by the victim that warranted his murder, police officers said. They also called up journalists and "boasted" about how they defeated "a casteist and corrupt leader", and were upholding justice, according to officers aware of the matter. A senior police officer with the Delhi Police Crime Branch said on condition of anonymity that the gang consisted of "budding" criminals, who pretended to be social heroes on media platforms, while taking cont...