An Algerian man who drove his car into a group of soldiers near Paris earlier this month had radical beliefs and showed interest in the Islamic State group, France's anti-terrorism prosecutor said.
Francois Molins pressed charges against Hamou Benlatreche of attempted murder of security forces in connection with a terrorist enterprise.
He said the suspect, shot by police during his arrest and still in hospital, was not in a condition to answer investigators' questions.
Mr Molins said investigators have found images on Benlatreche's phone that were connected to IS, such as a flag and photos of its leaders, and other evidence.
The attack on August 9 injured six soldiers in the Paris suburb of Levallois-Perret.
AP