Activists from Ethiopia's largest ethnic group, the Oromo, have called for more anti-government protests this weekend, days after thousands of demonstrators took to the streets in the northern city of Gondar.
They say they will hold countrywide protests against what they describe as continued killings and other abuses by the authorities.
In the latest incident earlier this week, at least six people were allegedly shot dead by police in the eastern town of Awaday.
Prime minister Hailemariam Desalegn warned on Tuesday that Ethiopia was sliding towards ethnic conflict similar to that in neighbouring countries.
Ethiopia's second largest ethnic group, the Amhara, held a large demonstration last Sunday in Gondar.
The ruling Ethiopian People's Revolutionary Democratic Front has been in power since 1991 and won all seats in parliament in last year's elections.