183 cases reported in the last 24 hours, the highest jump so far, Delhi”s tally of coronavirus cases crossed the 900-mark, while the containment zones declared by authorities to curb the spread of the disease rose to 30.

According to the bulletin issued by Delhi”s Health Department, of the 903 cases, 584 are linked to Tablighi Jamaat”s Nizamuddin markaz (centre) where thousands gathered last month to attend a religious congregation.

Two more deaths linked to coronavirus were reported, taking the total number of fatalities to 14.

Among the fresh areas that have been included in the list of containment zones are in west, central and south east Delhi.

Chief Minister Arvind Kejriwal on Thursday had announced ”Operation SHIELD” to contain the spread of the disease.

Sealing, home quarantine, isolation and tracking, essential supply, local sanitisation and door-to-door checking are the key aspects of “SHIELD” in any containment area.

The “Operation SHIELD” has been successful in containing the spread of COVID-19 in the Dilshad Garden area, which was one of hotspots of the dreaded virus in the national capital.

Delhi Health Minister Satyendar Jain issued a statement, saying the hard work of the health officials and the successful implementation of “Operation SHIELD” has made Dilshad Garden a coronavirus-free area.

No new cases were reported from Dilshad Garden in the last 10 days, it said.The government said it would also initiate random testing of residents soon.

According to the statement, under “Operation SHIELD”, 123 medical teams screened more than 15,000 people living in 4,032 houses in east Delhi”s Dilshad Garden and hospitalised coronavirus suspects, after seven confirmed cases were reported from the area.

The Delhi government, with the help of the city police, imposed a curfew in Dilshad Garden and Old Seemapuri.

Taking a stern action against those who violated the government order of not wearing a mask, the Delhi Police registered 130 cases against offenders. Face masks have been made mandatory for people stepping out of their homes in Delhi.The police also registered an FIR against a Congress leader for hiding his travel history after allegedly attending the Tablighi Jamaat congregation at Markaz last month. The Congress leader, his wife, who is a councillor, also tested positive for coronavirus. The Deenpur village in Najafgarh, where he resides, was declared a containment zone.