Four Swiss citizens are still being held by the Italian authorities following their arrest during protests against the G8 summit in Genoa at the weekend. Five others were released this week.
The Swiss consul general in Genoa, Brigitta Schoch, told swissinfo that she had been given access to the detainees, whose identities were not revealed.
"We were able to visit the four young adults who are being kept at a prison in Alessandria", she said. "Their detention conditions are satisfactory."
Switzerland's foreign ministry on Tuesday said it did not know when the four remaining protestors would be released. The ministry was also unable to give any details about where the prisoners came from.
The Swiss demonstrators were detained for resisting arrest. Under Italian law, they could face sentences of between six months to five years in jail.
The four Swiss are among 98 other anti-globalisation protesters currently being held in Italian jails.
Over 200 people were arrested and 560 were injured during clashes between police and protesters at the G8 summit in Genoa. One person was killed.
swissinfo with agencies