Bangladeshi police also arrested a University of Toronto student.
Authorities are attempting to stop a series of attacks on minority groups in the country.
A mob killed Muhammad Ikhlaq after rumors spread he had slaughtered and eaten a cow.
Explosion came during a fireworks display to mark the local Hindu new year.
With 70 percent misidentifying turban-wearing Sikhs, it is important to learn about Sikhism.
Security forces have placed several provinces on alert in response to home-grown Islamic militancy