The hunt continues for those behind Tuesday's bomb attacks, which killed at least 14 in the Indian holy city of Varanasi.
Troops patrolled the city's Cantonment train station, site of one of the two bombings.
Other security staff stood watch outside the Sankat Mochan temple, rocked by a blast around sunset.
In Delhi, security officials searched rail passengers amid fears of more attacks.
Passengers were checked as trains pulled in to Delhi station. Authorities are afraid the blasts may stoke religious tensions.
Hindu nationalist activists gathered in Delhi to protest at the bombings.
People are shocked in Varanasi, which has a reputation for religious tolerance.
Investigators spent the night searching for clues. It is not clear who carried out the attacks. Picture: Serena Bowles
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