Singapore is temporarily suspending all Boeing 737 MAX flights in and out of island city-state, according to the Civil Aviation Authority of Singapore (CAAS).
Passengers from more than 30 countries were onboard the doomed Ethiopian Airlines flight.
"The group CEO who is at the accident scene right now regrets to confirm that there are no survivors," the airline posted on Twitter alongside a picture.
The Netherlands unveiled a national monument on Monday in memory of the 298 people killed in the downing of a Malaysia Airlines jetliner in 2014
Police are investigating whether a piece of plane wreckage washed up on the French-owned Reunion island in the Indian Ocean is from the missing