Some 3 million Muslim devotees raised their hands in prayer seeking global peace and harmony at one of the world's biggest mass religious congregations, police and organizers said Sunday. The final prayer capped a three-day Islamic gathering on the sandy banks of the River Turag outside Bangladesh's capital, Dhaka. "We estimate at least 3 million people are at the prayer. There were about 2.5 million devotees at the final prayer last year," local police official Kaium Biswas told The Associated Press. Many of the pilgrims were on boats or on the rooftops of nearby buildings as the crowd overflowed the designated venue.