Police have now sealed off the area around Liberation's offices
A gunman has opened fire at the Paris offices of the left-wing newspaper Liberation, leaving one man seriously wounded.
The victim was a photographer's assistant, aged 27, Liberation said. On Friday a man armed with what appeared to be a gun broke into the Paris offices of the rolling news channel BFMTV. He did not fire any shots and no-one was injured.
Police have now been stationed outside all the main media offices in Paris.
It is not clear whether there is any connection between the attacks at BFMTV and Liberation.
However, witnesses in both cases said the gunman was armed with a hunting rifle.
Cartridges found Liberation said the man entered the premises shortly before 10:15 (09:15 GMT) and fired two shots before escaping.
The gunman did not say anything, Liberation reported. He was described as aged about 40 and wearing a cap.
Deputy editor Fabrice Tassel said the victim - who was shot in the chest - was fighting for his life. The man - who has not been named - was said to be a freelance photographer's assistant who had just arrived at the newspaper office to help with a a fashion photoshoot.
Police have sealed off the area around Liberation's offices. Interior Minister Manuel Valls has arrived at the scene, along with Culture Minister Aurelie Filippetti and the Mayor of Paris Bertrand Delanoe.
Liberation said three spent cartridges of buckshot had been found, along with traces of buckshot in the ceiling.
"In a democracy, when someone enters a newspaper office with a gun, this is very, very serious, whatever the person's mental state," said Liberation's publisher Nicolas Demorand.
Mr Demorand said he would hold a news conference at 17:00 GMT.
In the next few hours, investigators will compare CCTV images from the two attacks to see if there are any similarities, BFMTV said.
A journalist from Liberation told BFMTV that the two security guards at the entrance immediately ducked down behind their desks when the man drew his weapon and did not see him clearly.
