Visakhapatnam: Tirumala Tirupati Devasthanams (TTD) Officer on Special Duty (OSD) P. Seshadri, also known as Dollar Seshadri, died here due to heart attack today. Seshadri, 72, was in the city to participate in the ‘Karthika Deepotsavam.’ Seshadri has been in the service of Srivari since 1978. Although he retired in  2006, Seshadri has been working…