About 150 far-right militants have clashed with riot police in the northeastern Greek city of Komotini as they attempted to attack a peaceful march by members of Greece's Muslim minority.
The far-rightists threw rocks and chairs at police, who countered with tear gas and stun grenades. No arrests were reported.
The march, organized by the small Friendship, Equality and Peace Party, was in commemoration of the 21st anniversary of the death of its founder, Achmet Sadik. Sadik was elected as the party's first, and so far only, member of parliament in 1989 and died in a traffic accident in 1995.
Most of Greece's multi-ethnic Muslim minority, which numbers over 100,000, is concentrated in the northeastern region of Thrace.