A lawyer says Prime Minister Recep Tayyip Erdogan's son "is ready to testify" to prosecutors in a probe that had been stalled after police refused to bring him for questioning on prosecutors' orders.

Erdogan last month dismissed four government ministers implicated in an initial corruption and bribery scandal and then quickly moved to replace police officials involved in the investigation — an action which news reports said thwarted a second corruption probe which sought to question his son, Bilal Erdogan, and other people.

Lawyer Ahmet Ozel told state-run Anadolu Agency late Thursday that Erdogan's son, Bilal, was prepared to give testimony to prosecutors but that he has not been summoned.

The statement came following a brawl in parliament where opposition legislators criticized Erdogan for allegedly obstructing the investigation.