What we know so far:

-- An Ethiopian Airlines Boeing 737 passenger jet to Nairobi crashed on Sunday with 149 passengers and eight crew members aboard

-- There were no survivors onboard the flight

-- Eight Chinese were aboard the flight, seven were from the mainland and one from Hong Kong

-- The plane was a Boeing 737 MAX 8, the same plane that crashed in Indonesia in October, killing 189

-- China's civil aviation regulator ordered its airlines to suspend use of Boeing 737 MAX 8 planes

-- Ethiopian Airlines has grounded all its Boeing 737 Max 8 aircraft as a safety precaution

-- The plane is the latest version of the 737 family

-- Pilot of crashed flight had excellent flying record

-- The plane had no known technical problems

-- Pilot reported difficulties and asked for permission to turn back 

--Black box from crashed plane has been recovered, according to Ethiopian state-affiliated broadcaster