Italian security forces clashed with pro-Kurdish demonstrators and held two people near the Castel Sant'Angelo monument on Monday during Turkish president Recep Tayyip Erdogan's visit to Rome, police said.
"Following the violent aggression towards security forces by protestors at Castel Sant'Angelo, the demonstration was brought to an end," Rome police headquarters said.
"Two people were arrested. We are in the process of identifying them from police images," the statement added.
Police earlier said around 150 people took part in the authorised demonstration in the gardens of Castel Sant'Angelo, outside the 'green zone' cordoned off by police in central Rome.
Amid a massive security lockdown, Italian authorities took the unprecedented step of banning demonstrations inside central Rome's 'green zone' from Erdogan's arrival late on Sunday to his departure on late on Monday.
The Castel Sant'Angelo protest was organised by the Rome Kurdistan Network in protest at Erdogan's visit and the deadly Turkish military offensive launched in January in the Kurdish enclave of Afrin against Syrian Kurdish People's Protection Units (YPG) militia.