Sharon Gray, a UC Davis postdoctoral researcher in the university's plant biology department, was killed Tuesday in Ethiopia when the vehicle she was riding

A US citizen has been killed in Ethiopia amid large anti-government protests, the CNN reported.

A van travelling on Addis Ababa's outskirts was hit by stones "thrown by unknown individuals", the US embassy in the capital said.

A woman passenger was struck by a stone and died later from her injuries.

A wave of protests have killed hundreds of people in Ethiopia since November 2015.

The woman was an "agricultural expert" working in the troubled Oromia region.

Source: MENA