PARIS - The man suspected of carrying out Sunday's attack in the French city of Marseille, killing two people, had been arrested and then released by police two days before the incident, a source close to the police investigation said. The source said the suspect - who went by eight different identities or aliases - was stopped by police in Lyon on Sept. 29 on suspicion of robbery. He was then released for a lack of evidence. The suspect's identity remained unclear, the source added. 'The murderer had eight different aliases. Each time he was stopped, he presented a different identity paper. That's why it's so difficult. At one moment, he says he was born in France, at another he says he was born in Algeria,' the source said. A soldier shot the suspect dead after he had stabbed two women to death at Marseille main train station on Sunday, in what officials described as a 'likely terrorist act.'