Hours after India expelled a Pakistan High Commission staffer for espionage, Pakistan summoned the Indian envoy in Islamabad and asked that an Indian official, Surjeet Singh, leave Pakistan; Border areas have been put on high alert after Pakistan again violated ceasefire in several areas of Jammu and Kashmir; Cyrus Mistry, was "fully empowered" to run India's largest conglomerate, Tata Sons has said in a statement amid international focus on the abrupt removal of its 48-year-old Chairman; Delhi people inhaled severely poor quality air which had respirable pollutants up to nine times above the safe limit at certain places even as authorities warned of a "critically polluted" period ahead.