. >> the investigations have revealed that mohamed lahouaiej bouhle had been planning this for a longand he had accomplices that helped with the preparations. reporter: immediately after the incident, police raidedent of td confiscated his computer. mohamed lahouaiej bouhle was known as a loner and he had been radicalized very quickly. >> on his phone, police found pictures from a fireworks display on the 14 of july, 2015. and also from a concert on the promenade on the 17th of july, 2015, with close-ups. reporter: it is thought that he made more than 2000 phone calls to accomplices in the week up to the attack. the secret service are interrogating the four men and one woman near paris. they are believed to be three tunisians and albanians, and were not previously known to authorities. sarah: russian athletes that had begun packing their bags, can now unpack. it top court has upheld a band on -- ban on russian athletes. it came after state-sponsored doping in russia and it is a decision that could have a major impact on all russian athletes, as the ioc is due to decide if they can com