New Delhi, Nov 30 : In the wake of emergence of a new Covid-19 variant -- Omicron, Delhi Chief Minister Arvind Kejriwal on Tuesday requested Prime Minister Narendra Modi to ban international flights as most of them land in the national capital. "Many countries have stopped incoming flights from Omicron-affected countries. Why are we not following their suit? In the first wave also, we had taken time to stop foreign flights," Kejriwal said in a tweet, adding that most of the foreign flights come to Delhi, which is the most affected state. He requested the prime minister to "kindly stop flights immediately." The AAP leader had quoted a media report: "A South Africa returnee has tested positive for COVID-19 in Chandigarh. One of his family members and domestic help are also positive for the disease. The samples of positive cases will be sent for whole-genome sequencing to NCDC, Delhi to ascertain a variant of coronavirus". With the news of Omicron, being detected in South Africa, scientists and health experts in India have said that new waves of infection are anticipated and unless we act quickly and efficiently, the country will possibly see repeat waves. The variant has also been declared as a variant of concern by the World Health Organisation (WHO). On Sunday, Kejriwal wrote to Prime Minister Narendra Modi, requesting him to stop international flights from regions witnessing a rise in Covid-19 cases. Meanwhile, Meanwhile, Delhi government-run Lok Nayak Jai Prakash Hospital has been designated to treat patients testing positive for the new Covid-19 variant Omicron. The hospital has been asked to earmark wards for isolating and treating such patients.In order, the Health Department has directed the hospital not to deny admission to patients infected with the new variant on any ground. /IANS