Turkey's parliament on Tuesday approved a government-backed motion to extend by another three months the state of emergency imposed in the wake of the July 15 failed coup against President Recep Tayyip Erdogan.

The state of emergency -- which has seen tens of thousands lose their jobs or be arrested on suspicion of links to the putsch -- had already been prolonged once before and was due to expire on January 19.

Ankara argues the state of emergency is needed to eradicate the influence in Turkish institutions of the US-based Islamic preacher Fethullah Gulen, who it blames for the failed coup. Gulen denies the charges.

However, the state of emergency -- which is now set to last at least nine months -- has troubled the European Union which fears it has been used for a broad crackdown against Erdogan critics and not just suspected coup plotters.

According to the latest figures published by the state-run Anadolu news agency, over 41,000 people have been arrested over suspected links to Gulen in the investigation.

Meanwhile, over 103,000 people have been investigated as part of the probe, it added.

The state of emergency gives the government special powers to fire state employees and close down associations, including media groups.

It also extends the time that suspects can be held in jail without being charged.