Rome Mayor Virginia Raggi on Tuesday said prosecutors summoned her for questioning as part of a corruption probe into one of her confidants.

Local media reported that Raggi, a euroskeptic of Italy's leftist 5-Star Movement (M5S), is facing questioning for alleged abuses of power and is scheduled to testify before February.

In a statement published on Facebook, she said her summoning concerned the appointment of Renato Marra as head of tourism for the city.

Marra is the brother of Raffaele Marra, who police arrested in December on suspicion of taking a bribe from a real estate developer in 2013 while serving as the head of housing policy under ex-Mayor Gianni Alemanno.

Italian prosecutors investigated Alemanno for suspected involvement in a political scandal that caused the local government to collapse in 2014.

The scandal surrounded the misappropriation of public funds by members of the mafia in Rome and the region of Lazio.

"I am not worried. I have complete faith in the judiciary as always," Raggi said on her Facebook account.

'Mistakes were made'

The summoning has cast doubt on M5S leader Beppe Grillo's statement that the leftist party has remained untainted by unethical political maneuvers.

In December, Grillo said in a blog post that the party must "change gears" and "fix the errors and leave no room for doubt."

"Mistakes were made, and Virginia Raggi has admitted them. She trusted the least trustworthy people in the world," he added.

M5S played an influential role in torpedoing former Prime Minister Matteo Renzi's December referendum to overhaul Italy's political system.

ls/cmk (AFP, dpa)