ANKARA : A 22-year-old man was killed in southern Turkey after fresh protests over a teenager left in a coma during anti-government demonstrations in June, a local news agency reported Tuesday.

The man died in hospital after being hit in the head by a tear gas canister during clashes between police and protesters in the southeastern city of Antakya near the Syrian border, said the Dogan news agency. His death is the sixth recorded since protests against the Islamic-rooted government of Prime Minister Recep Tayyip Erdogan began in June.

Since then, pockets of unrest have occasionally flared across the country.

Clashes also erupted in Istanbul Monday, as police fired tear gas and water cannon to disperse demonstrators, mostly masked members of far-left groups, who threw rocks and Molotov cocktails and erected barricades.

The demonstrators were protesting over Berkin Elvan, a 14-year-old who in June was hit by a tear gas canister in the head in Istanbul after he left his parents' house to buy some bread as violent demonstrations swept the city.

And there were calls on social networks for further demonstrations on Tuesday evening in Taksim Square, a focal point for demonstrations in Istanbul, and other neighbourhoods of the city.

Protests were also planned against police violence in the Turkish capital, Ankara, where for several days university students have clashed with police over a municipal project to build a road across part of the campus of Middle East Technical University (METU).

June's protests were triggered by the proposed redevelopment of Gezi Park in Istanbul, which escalated into unrest against what is seen as Erdogan's increasingly authoritarian rule.

More than 8,000 were injured during the three weeks of demonstrations, according to the Turkish doctors' union, presenting Erdogan's Justice and Development Party (AKP) with its biggest challenge since it came to power in 2002.