Greek youths have clashed with police in central Athens as a protest against education reforms turned violent when it reached parliament's Syntagma square.
Protesters threw stones, flares and petrol bombs at police who responded with tear gas.
The incidents occurred during a march by students to parliament, who protested against a draft bill changing university entrance requirements.
Reuters witnesses saw at least three petrol bombs hurled by demonstrators, who also threw flares. Police responded with rounds of tear gas.
The incidents ended almost as rapidly as they started and the central square soon opened up for traffic.
Reforms wanted by the education ministry include curriculum changes in the final year of high school and alterations to what are now uniform entrance exams to university, irrespective of the chosen field of study.
High school students say the changes will increase the exam burden and create a system which discourages critical thought.
(Source: Reuters)