France, Oct. 29 -- Olivier Christen, head of the National Anti-Terrorism Prosecutor's Office said the suspect told investigators he had chosen the location for his attack because he believed Trappes was a stronghold of Islamists.

The 39-year-old, known as Kevin T, is due to appear before a judge on Thursday for formal charges to be considered.

Christen said his department has asked for Kevin T to be held in pre-trial detention.

A 26-year-old man of Congolese origin, Pengo Bossio Wangi, was killed during the attack. Seven people were injured, four of them seriously, including an 11-year-old girl.

"Three of them are still in hospital and one remains in a life-threatening condition," said Christen.

He said that Kevin T denied any terror...