Transcript for Ashley Olsen's Final Steps in Italy
This is the last place that Olson was seen alive late Thursday night through spirit the Monte Carlo club. We're friends witnesses then say she was seen around 3 or 4 o'clock in the morning leaving. With the suspect the chief prosecutor here Ford said today that that suspect is a 27 year old man from Senegal. Here for the past several months in Italy. Illegally he was known to police because a previous drug activities. And when they laughed witnesses say they're walking towards her apartment which is about ten minutes from here. This is the son DiSpirito church where Olson's funeral will be held tomorrow. She was something of a fixture in this neighborhood in this yachts. Recognizable because her bright blond hair and often sitting here on these steps with her eagle scout. On top of the eyewitness accounts the police pulled video from cameras like this one. On Olson street corner from all along the route that Olson and the suspect thought they pour over hours and hours of video. To figure out what happened between the time. But the couple left the club and 36 hours later. When her body was found in the prosecutor said today that that video what they found on the video corroborated what the eyewitness isn't that. This is the front door of Olson's building you can see people come here to leave flowers and messages of condolences there's no sign of forced entry so we know that Olson. Let him up and that's when the prosecutor says they had consensual sex the suspect's DNA was found on a condom and a cigarette butt. In the bathroom and after that is when it reportedly started to go bad. He apparently pushed Olson and when she was found dead on Saturday he had to fractures on her skull. The official cause of death was strangulation and found would bruises and scratches on her neck. The suspect who is now in custody says he did not intentionally kill Olson. But he is now being held for aggravated homicide.
This transcript has been automatically generated and may not be 100% accurate.