A 76-year-old Senior Scientist, Vinayak Kolvankar, of the Baba Atomic Research Centre (BARC) has been missing since Thursday. The Nirmal Nagar police have registered a missing person report and conducted a search operation for him. Kolvankar resides in Aaradhna New MIG Colony, behind the PF office in Bandra East. Kolvankar has been suffering from Alzheimer`s disease for the past four years. On Thursday night, he went out to purchase flowers but did not return home.

Kolvankar worked at BARC for 40 years before retiring in 2008. He specialised in seismology, the study of earthquakes. His research helped countries predict earthquake locations before they occurred, including patterns involving the sun, moon, and specific places. His work has been translated into 125 languages worldwide.