New Delhi, July 17 - Security agencies have swung into action to provide multi-layered and impenetrable security to US Secretary of State Hillary Clinton during her two-day visit to the national capital that begins Sunday. US intelligence officials have been consulted over the preparations, the police said Friday.

Clinton, who arrives in Mumbai Friday night, is scheduled to arrive in the national capital Sunday afternoon. She will be staying at the Taj Palace Hotel, on Sardar Patel Marg here.

'She has been given top diplomat-level security and so far there is no threat whatsoever. A multi-layer security cover will be in place. All security measures have been taken in consultation with officials of US intelligence agencies,' sources in the Delhi Police told IANS.

Security agencies have placed bomb disposal squads, spotters and dog squads, and anti-sabotage teams in different parts of the hotel.

'Many commandos and intelligence officials will be in plain clothes and the hotel security staff has already been briefed. The instructions from security agencies have been passed on to them.'

The floor on which the US secretary of state will be staying was not revealed to the media, but officials said the floor will be closed from Sunday morning.