The deputy leader of the main opposition Republican People's Party (CHP), Bulent Tezcan, was injured and taken to hospital as fists flew in the assembly.
Media reports said the fracas flared after one lawmaker spoke about claims that Prime Minister Recep Tayyip Erdogan's son had been summoned to testify as part of a major corruption probe rocking the government.
Parliament is expected to vote from tomorrow on a bill aimed at giving the government greater control over the judiciary, a move that has raised concerns at home and abroad about the weakening state of democracy in Turkey under Erdogan.
In the latest move today, more than 160 officers were removed from their posts in the western metropolis of Bursa, a day after a similar shakeup in the main cities of Istanbul, Ankara and Izmir.
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The Turkish media estimates that at least 2,500 police, including top officers, have been punished since the graft scandal erupted in mid-December.
Dozens of prosecutors, including senior lawyers leading the investigations, have also been sacked or reassigned.
Erdogan accuses an erstwhile ally, exiled Turkish preacher Fethullah Gulen, of creating a "parallel" state to try to topple his government via loyalists in various institutions including the police and judiciary.