Rome, Italy (CNN) -- Three men were arrested for assaulting officers in Naples, Italy, police said Monday, but the city remained mostly calm after weekend protests.
The attack on the undercover police Sunday came a day after angry demonstrations over garbage collection and disposal left six police officers injured.
A large group of young men assaulted the unmarked police car with iron sticks, firecrackers and rocks when they found out officers were in it, police said.
One officer was injured in the eye. The men in custody are 18 to 24 years old and do not have previous police records.
But it appeared to be an isolated incident on the heels of a protest the night before. There were no clashes in Terzigno, the town closest to a planned new landfill at the center of the controversy.
The Italian government said before Saturday's clashes it would halt the construction of the controversial landfill near Naples, but the assurance was not enough for protesters.
CNN
