Here's the terrible detail about the assailant who killed two women in France.

The man who stabbed two women near France's main train station had been detained for robbery at a store and released just one day before the attack, and had used many false identities in a series of past arrests, French officials reported.

French authorities are investigating the suspect's mobile phone and working to find out whether he had accomplices or direct links to the Islamic State (ISIS), which took responsibility for the attack.

The assailant was killed by French soldiers shortly after the attack.

The suspect was identified by fingerprints, which coincided with them during the recent arrests, according to two police officers, the AP reports.

He was not on France's list of extremists, according to officials.

He had no French standing documents and was arrested under suspicion of robbing a store in Lyon on Saturday evening, before being released, according to the French police.