India has increased security in major cities after receiving information that a Pakistan-based militant group is planning a New Year attack.
More police were deployed to city streets, including in the financial capital Mumbai, which was attacked in 2008.
Airports and railway stations and the popular beach resort state of Goa all tightened security following reports that the banned militant group, Lashkar-e-Taiba, was planning an attack, a Home Ministry official said.
India has taken even minor terror threats seriously since a three-day terrorist siege killed 166 people in Mumbai, though there has been no major attack there since.
Security has been high in Mumbai since Friday, when police began searching for four men who authorities believe entered the city to carry out a terrorist attack. Computer-aided photographs of the four suspects were released.
Police also made house-to-house searches in some parts of the city and tightened security at bus and train stations.