U.S. Homeland Security Secretary Janet Napolitano has begun a four-day visit to India by paying tribute to victims of the 2008 Mumbai terror attack.
Napolitano laid a wreath and observed a brief silence on Tuesday at a memorial to 16 policemen who were killed during the three-day siege of India's financial capital.
Napolitano will also visit New Delhi to launch an India-U.S. security dialogue to increase cooperation in counterterrorism, intelligence sharing and cybersecurity.
A total of 166 people were killed when 10 young Pakistanis attacked two luxury hotels, a Jewish center and a busy train station in Mumbai in November 2008. India blamed the attacks on Pakistan-based militant groups.