A team of Bangladeshi divers returned to the capital Thursday after an observation mission to pull out three persons from Rara lake in far west Nepal where a French manufactured helicopter crashed killing Princess Prekshya and injured two others Tuesday, aviation sources said.

Two passengers and a helicopter pilot are missing presumed dead in the lake. The divers will go back to the area to recover the bodies. Nepal asked Bangladesh for help to pull out the bodies.

Government has ordered an official probe into the accident.