Foreigners in India are being warned to stay away from marketplaces in New Delhi, for fear of terrorist attacks.
New Zealand is among several Western countries to issue new warnings about the threat of attacks in India.
A statement issued by the Ministry of Foreign Affairs & Trade says there are increased indications and heightened concerns that terrorists are planning attacks in the capital, New Delhi.
MFAT says large public gatherings and demonstrations, as well as markets, should be avoided.
The United States, Britain and Australia have also issued renewed warnings, raising the likelihood of a terrorist attack in New Delhi from possible, to imminent.
Previous warnings were issued on 21 April.
The ABC reports the Interior Ministry in India has ordered police and security personnel to be on high alert.
The US Embassy said that popular shopping areas such as Chandni Chowk, Connaught Place, Greater Kailash, Karol Bagh, Mehrauli, and Sarojini Nagar, should be avoided.
The last major attack in New Delhi was a series of bomb blasts in busy upmarket shopping areas in September 2008: 22 people were killed and 100 wounded.
Terrorists attacked a number of locations in Mumbai on 26 - 27 November, 2008: 166 people were killed and hundreds were wounded.
Targets included the railway station, the Taj Mahal and Oberoi Hotels, and restaurants frequented by tourists.
Two bombs exploded on 17 April, 2010, in Bangalore before an Indian Premier League cricket match.
India has been struggling to assure international sporting authorities it has security under control for the Commonwealth Games in New Delhi in October.