Three students of Chakaria Grammar School in Chakaria upazila of Cox's Bazar drowned and two others remained missing after swimming in the Matamuhuri river under Matamuhuri Bridge on the Cox's Bazar-Chittagong highway yesterday afternoon.

Of the hundreds of rivers in Bangladesh, only two rivers -- Sangu and Matamuhuri -- have originated from Bangladesh. Both rivers are located in the southeastern hilly part of Bangladesh.