Prison guards reported a brawl between inmates who then turned against penitentiary police officers, slapping and punching them.
Nobody was injured and the situation has returned to normal, sources at the detention facility said.
The incident followed riots recorded over the past few weeks at juvenile prisons in Rome, Turin and Milan.
In the latest episode, inmates at Milan’s Beccaria prison last weekend set mattresses on fire to create chaos and enable detainees to attempt an escape, prompting the intervention of firefighters.
Four detainees who tried to escape were found by police on the building’s roof a few hours after the riot began.
Eight detainees and police officers were injured, none of them seriously.
Citing the latest incidents, the leaders of prison officers’ unions Sappe and Cosp spoke about an “emergency” in juvenile detention facilities, often plagued by overcrowding.
“Let’s ask ourselves whether this is a form of dissent or [can we] acknowledge that we are dealing with an emergency,” Domenico Mastrulli, leader of Cosp, said on Monday.
ANSA