Violence broke out as officers chased protesters down the street.
Armed with batons and shields, riot police formed a ring of steel to see off protests outside the summit in Lucca, Italy.
The protest started peacefully but soon descended into chaos with reports of flares being thrown at police.
Police allegedly used batons against the hundreds of protesters as sirens blared during the clashes
Police allegedly used batons against the hundreds of protesters as sirens blared during the clashes, which came hours after an abandoned suitcase triggered a bomb scare in the city.
Security has been increased in Lucca, Tuscany, because of the G7 summit with airspace over the region closed for the duration of the two-day event.
Foreign ministers from Italy, the US, Germany, France, Japan, Canada and Britain have met with EU foreign affairs representative Federica Mogherini.
Riot police clashed with protesters as the G7 summit in Lucca got underway
Violence broke out as officers chased protesters down the street
Violence erupts in Italy
Tue, February 21, 2017
Clashes broke out at a protest in Rome, as Italian taxi drivers took to the streets to protest as the Italian Chamber of Deputies votes on the ‘Uber amendment,’ which was passed by the Italian Senate earlier in February.
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People help a man who was injured following clashes between street vendors, taxi drivers and police police during a demonstration in front of the Democratic Party (PD) headquarters to protest against the EU directive Bolkestein
The summit is expected to discuss putting pressure on Russia to break its ties with Syrian president Bashar al-Assad.
US missile strikes hit a Syrian air base suspected of launching the deadly chemical attack in Idlib last week, with president Donald Trump expected to take a tough line on Syrian ally Russia.
Police allegedly used batons against the hundreds of protesters
Flares were reportedly thrown at police
Foreign sSecretary Boris Johnson said Russia's reputation was being tarnished by its continued support of Assad and suggested, along with Canada, that sanctions could be tightened on Moscow if it continued to back the Syrian leader.
The G7 summit marks ministers’ last chance to give US Secretary of State Rex Tillerson a clear mandate before he travels to meet his Russian counterpart in Moscow on Wednesday.
Mr Johnson said: “What we're trying to do is to give Rex Tillerson the clearest possible mandate from us as the West, the UK, all our allies here, to say to the Russians 'this is your choice: stick with that guy, stick with that tyrant, or work with us to find a better solution’.”
Russia has rejected claims that Syrian government forces were responsible for the chemical attack and the Kremlin has said it will not cut ties with President Assad.