Ethiopia's main opposition says police attacked dozens of its members following a meeting in the capital, Addis Ababa.
The chairman of the Coalition for Unity and Democracy, Hailu Shawel, told reporters that police roughed up party members and newly elected legislators as they left party headquarters Friday.
The Ethiopian authorities made no comment on the allegation.
The Coalition has been boycotting Ethiopia's lower house of parliament, saying it wants a solution to contested results from parliamentary elections in May before taking up its seats.
The party won 109 seats in the 547-member parliament in the elections.
Anti-government protests after the contested elections erupted into deadly violence with police opening fire, killing around 40 people.
Opposition parties say authorities have arrested hundreds of their supporters and members over the past several months.
Some information for this story provided by Reuters and AP.