French officials say that two women have been killed in the attack by a man with a knife at Marseille's main train station, including one whose throat was slit.
The officials say soldiers then fatally shot the attacker. Police have evacuated the Saint Charles station, with officers and soldiers taking up positions outside.
The officials spoke on condition of anonymity because they weren't authorized to discuss an ongoing investigation.
The Paris prosecutors' office says that a counter-terrorism probe has been opened, but no motive for the attack has been immediately given.