NEW DELHI: Two deaths allegedly linked to pressure from the ongoing Special Intensive Revision (SIR) of electoral rolls took place on Thursday in West Bengal, officials said. A booth-level officer, Ashok Das, and a 60-year-old senior citizen, Putu Sheikh, lost their lives amid growing anxiety over the SIR exercise.Das, an assistant teacher at Baharu High School in Joynagar, South 24 Parganas, was found hanging at his residence in Mukundapur, southern Kolkata. He was declared brought dead at a private hospital, a police officer said. His family alleged that he had been under "tremendous pressure" due to SIR-related work.