An undated photo released by a social network shows the 25-year-old Moroccan suspect in Friday's shooting, named as Ayoub El-Khazzani, who was overpowered by two US servicemen and other passengers before he could kill anyone during an attack aboard an Amsterdam-Paris Thalys train on August 21, 2015. He lived in (southern) Spain in Algeciras for a year, until 2014, then he decided to move to France. Once in France he went to Syria, then returned to France, according to a Spanish anti-terror source.
What do we know about the France train gunman?
02:06 - Source: CNN

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NEW: U.S. officials say the suspect was not on the U.S. no-fly list

Lawyer for Ayoub El Khazzan says he was living in a park in Brussels, Belgium, when he found a suitcase full of weapons

El Khazzani, who previously lived in Spain, has denied suggestions that he tried to travel to Syria

CNN  — 

Witnesses say he shot at and slashed passengers with a knife until a handful of heroic passersby stopped him. Who was the attacker who sparked terror on a Paris-bound train?

The gunman has been identified by authorities as Ayoub El Khazzani, 25, a Moroccan national who is said to have been living on the streets in the Belgian capital, Brussels.

WATCH VIDEO: Exclusive footage from inside train

He is believed to have boarded the France-bound Thalys train in Brussels, armed with a Kalashnikov assault rifle, a Luger pistol and a box cutter.

French authorities said it is clear he was planning a massacre, and Belgian authorities said he had ties to known hard line Islamist groups.

According to French sources, El Khazzani was the subject of a “Fiche S,” or “S notice,” signaling to intelligence communities across Europe that a person merits special surveillance.

It was that notice, reportedly started because of El Khazzani’s connection to radical mosques in Spain, which brought attention to his trip from Berlin to Istanbul in May.

It’s not known if he also traveled to Syria in an attempt to join ISIS, but a senior European official said he may have been linked to a cell of French ISIS Fighters in Turkey.

The same cell is thought to have plotted a foiled attack against a church in the Paris suburbs in April, the official said. The gunman in that attack is awaiting trial after accidentally shooting himself in the foot and turning himself in to medical personnel.

El Khazzani’s attorney, Sophie David, says her client denies making a trip. She told CNN affiliate BFMTV and other media organizations that her client wanted to carry out an armed robbery and did not intend to spark a terror alert.

READ MORE: Heroes who helped avert a massacre

“He says he only wanted to extort money from the Thalys passengers, and nothing else,” she told France’s Le Parisien newspaper. “He denies any terrorist dimension to his actions – the suggestion makes him almost laugh.”

The lawyer said her client told her he found the firearms “in a suitcase abandoned in a park near Brussels railway station, where he used to sleep rough.”

Whatever his plans, it appears the gunman was not well-trained; witnesses said he didn’t seem to know what to do when his rifle jammed during the attack.

“He clearly had no firearms training whatsoever,” said Alek Skarlatos, one of the Americans who tackled the gunman. “If he knew what he was doing or even got lucky and did the right thing, he would have been able to operate through all eight of the magazines, and we probably wouldn’t be here today.”

El Khazzani is believed to have lived in the Spanish capital, Madrid, and Algeciras, in the south of the country, for several years. While there, he worked as a house painter and was twice convicted of drug smuggling.

His family moved to Spain from Morocco in 2007, and his parents still live there. They said he is an ordinary citizen, not a terrorist; his father told Spanish and British newspapers that his son never talked politics but just liked football and fishing.

Kamal Cheddad, leader of the Muslim community in El Saladillo, Algeciras, said El Khazzani “behaved like a normal guy for his age. He played and went to the beach with other guys; he was also looking for a job.”

Cheddad said the susp