A police officer shot in the neck outside the Italian Prime Minister's office remains in a serious condition, a hospital officials said.
Doctor Amalia Allocca said Giuseppe Giangrande, one of two paramilitary officers shot, arrived at Rome's Policlinico Umberto I Hospital with a bullet still inside him.
Surgeons removed the bullet and found it had passed inside his neck, touching the upper part of his spinal cord.
Mr Giangrande is being kept under close observation as medical staff complete tests, Dr Allocca said.
The second wounded officer was taken to the San Giovanni Hospital, also in Rome.
A gunman who shot and seriously wounded two policemen outside the Prime Minister's officer in Rome, says he acted because he was angry at the country's politicians.The attack came as Italy's new government was being sworn in after two months of political deadlock.
ITV News reporter Sejal Karia reports:
Eyewitness Fanuel Morelli has described the moment a gunman shot two police officers outside the Italian Prime Minister's office:
The alleged gunman who shot two police officers and a passerby outside the Italian Prime Minister's Office told investigators he acted out of anger with politicians, Reuters reported, citing a prosecutor working on the case.
"His intention was to strike politicians", deputy Rome prosecutor Pierfilippo Laviani said after the incident, which took place as the new government of Prime Minister Enrico Letta was being sworn in at the nearby presidential palace.
The shooter, identified by police as 49-year-old Luigi Preiti, an unemployed man from the southern region of Calabria, has been arrested.
Two Italian police officers have been shot and wounded outside the prime minister's office in Rome.
The shooting occurred at the same as Prime Minister Enrico Letta's new government was being sworn in just a mile away.
Mr Letta later described the incident as a "tragic gesture" of an unemployed man.
Italy's new Prime Minister Enrico Letta has said that today's shooting outside the premier office was a "tragic gesture" of an unemployed man.
Italy's new Prime Minister Enrico Letta has been sworn in, bringing to an end two months of political stalemate since the general election.
The coalition government brings together Mr Letta's Democratic Party and former prime minister Silvio Berlusconi's People of Freedom party.
Outside the Prime Minister's office, two police officers were injured after a man opened fire.
A man is in police custody after a shooting near the Prime Minister's Offices in Rome.
It's understood that two military policemen were injured in the shooting, which occurred while the new coalition government was being sworn in.
Two police officers have been injured in a shooting in Rome near the Prime Minister's Office an eyewitness has told Reuters.