ITC Maurya, the hotel where US President Donald Trump will check-in on Monday, has been brought under an unprecedented security cover with anti-sabotage teams involving the Army and paramilitary conducting checks on the routes to be taken by the visiting dignitary.
Security agencies are also working in close coordination with the US Secret Service, officials said.
Anti-drone detachment of NSG, snipers, elite SWAT commandos, kite catchers, canine units, sharp shooters on high-rise buildings and Parakram vans have also been deployed along the routes and areas in and around the hotel where Trump will be staying, they said.
Police personnel from six districts have been deployed for the security arrangements and nearly 40 companies of Central Armed Police Forces have been pressed into action.
Hundreds of high-definition CCTV cameras with night vision have been installed across the Sardar Patel Marg where hotel ITC Maurya is located to monitor the situation round-the-clock, the officials said.
Five years ago, when Trump's predecessor Barack Obama visited the national capital, the Delhi Police had rented 605 CCTV cameras and spent more than Rs one crore in hiring, installing and later removing them.
In view of the spiralling tensions between Iran and the US, there is a higher security threat this time and the agencies are more "cautious and alert" than ever, the sources said.
A senior police officer said, "We have also requested the anti-sabotage checking teams from paramilitary and army. They have been regularly conducting anti-sabotage checks along every route to be taken by the US President during his visit here".
Besides the multi-layer security cover, elaborate arrangements have been made by the Delhi Police, including placement of double barricading on all the roads where Trump's convoy is likely to pass, officials said, adding that aerial surveillance of the route will also be conducted as part of the security measures.
Jersey barriers (modular concrete or plastic barriers placed to organise traffic into lanes) will also be put up on the route, a senior police official said.
Delhi Police is also working in close coordination with civic bodies.
The route leading to a Delhi government school where US first lady Melania Trump is scheduled to pay a visit will also be under a high security cover, according to officials.
Trees have been trimmed according to the directions of the security agencies as part of the protocol.
Meetings have also been held with US security agents on the elaborate security arrangements in place.
At the ITC Maurya, a three-layer security will be in place.
The hotel, located in Diplomatic Enclave in Chanakyapuri, will have police personnel in plain clothes patrolling every floor.
Delhi Police's security wing personnel will form part of the inner cordon that will work in close coordination with the United States Secret Service.
The security wing of the Delhi Police is a specialised unit tasked with the security of VIPs and visiting foreign dignitaries.
The second layer of security will be deployed around the hotel's lobby area, parking, lawn area and the pool area, while the third one will comprise police personnel from the district police.
There is a large stretch of green ridge area opposite the hotel and security personnel will be deployed there as well.
Even at the neighbouring Taj Palace hotel, security personnel are maintaining a tight vigil.
The floor where the Grand Presidential Suite is located at the ITC Maurya is out of bounds for most hotel staff owing to the elaborate security arrangements.
Sources said security arrangements at the hotel have been underway for the last two weeks with NSG commandos and Delhi Police personnel surveying every floor on a daily basis. Officials from the US embassy are also monitoring the preparations with all details being kept under wraps.The sources added that the hotel will be out of bounds for other guests during the time Trump and his entourage will be there, and all the 438 rooms of the five-star property have been booked.