"Following the tragic accident of ET 302... Ethiopian Airlines has decided to ground all B-737-8 MAX fleet effective yesterday, March 10, until further notice," the state-owned carrier said in a statement released on Twitter.

"Although we don't yet know the cause of the accident, we have to decide to ground the particular fleet as an extra safety precaution," said the airline, Africa's largest.

All 157 people on board died when Nairobi-bound Flight ET 302 came down just six minutes after taking off from Addis Ababa.

It ploughed into a field near Tulu Fara village outside the town of Bishoftu, some 60 kilometres (40 miles) southeast of the Ethiopian capital.