The Gurugram administration has asked residents to make clanging noise by beating utensils to ward the locusts off.
Delhi's worldwide airport, which borders Gurugram - home to some of the world's top corporations - has asked pilots to take extra precautions during takeoff and landing due to the locusts, Reuters partner ANI reported.
Earlier on Friday, the Gurugram administration had asked the residents to keep their windows and doors shut fearing the arrival of locusts in the area, NDTV reported.
The locusts descended upon the streets of Gurugram on Saturday, flying in a large, cloud-like mass and resting upon anything they pleased.
The advisory was issued after Delhi Environment Minister Gopal Rai chaired an emergency meeting of senior officials, where he was informed that swarms have also reached the Asola Bhatti area in South Delhi.
"Heavy insecticide spray was done during the night and early morning".
Alarmed at the invasion of the locusts, which settled on trees, rooftops and plants, many residents of Gurugram also shared videos from their high-rise perches.
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The last time Kapur saw a swarm in the city was at least 40 years ago, he said.
Officials from the agriculture and other departments were keeping a close watch while supervision teams had been formed to tackle the situation. On Saturday, they went towards Jhajjar and entered Gurgaon district with insects covering the skyline in some parts of the "millennium city". "One is heading towards Delhi from the railway station and sector 4 to 5".
"A swarm of locusts has reached Mahendragarh district and is expected to reach Rewari border", the administration said.
"The swarm of locusts started around 11:00am".
"The locusts keep flying during day time and settle down only after dark in the evening", said the statement. With today's incident it is clear that apart from the usual targets in states like Punjab and Rajasthan, the NCR region is also coming in the grip of the crop-destroying locusts.
At many places in Gurugram, residents kept their windows closed to prevent the insects from entering homes. Haryana govt issues high alertThe Haryana government has issued a high alert after a swarm of locusts entered Rewari and Gurugram districts, with officials asserting that all necessary measures have been taken, including deploying tractor-mounted spraying facilities.