The Ethiopian authorities have detained 1,600 people as they try to boost security under the state of emergency, a government minister has told the BBC.

A statement, quoted by state-affiliated FBC website, lists arrests in the Oromia and Amhara regions, which have recently seen massive demonstrations.

This is in addition to Monday's arrests of 1,000 people near the capital.

A six-month state of emergency has been declared in the face of a wave of unprecedented anti-government protests.

Under the emergency measures, people can be detained without an arrest warrant for the duration of the state of emergency.