Police can provide a sequence of events that led to a man killing three people with a knife and then using a vehicle to attack three others.
Detectives have spent countless hours piecing together the movements that led to three people losing their lives, which includes extensive CCTV coverage and eye-witness accounts.
It is known that a man attacked two University of Nottingham students with a knife on Ilkeston Road on Tuesday 13 June.
A call was made to police at 4.04am.
Police quickly attended and found a male and female student, aged 19, in the street unresponsive.
Investigations have then revealed that a man matching the description of the suspect had attempted to gain entry to a supported living complex in Mapperley Road but had been denied entry.
This incident was not reported to the police at the time.
Police believe the suspect has then attacked a man and stolen his van.
A call was received by a member of the public and upon police attendance he was found deceased on Magdala Road with knife injuries.
The stolen van was then used by the suspect to run over three members of the public in the Milton Street area.
One man is in hospital in a critical condition while others are believed to have suffered minor injuries.
A short while later, police managed to detain the suspect by using a taser when he abandoned the vehicle and approached officers with a knife.
All three victims families are being supported by specially trained officers.
Detectives are still keeping an open mind on the motives of the attacks and a 31-year-old man is still in police custody.
He has been arrested on suspicion of murder.
There have been reports suggesting that police are no longer working with Counter Terrorism Policing.
This is not the case, and Counter Terrorism Policing continues to work alongside Nottinghamshire Police.
There have also been reports that other calls were made to Nottinghamshire Police about the suspect before he carried out the attacks in Ilkeston Road. This is not the case.
Chief Constable Kate Meynell said: “First and foremost my thoughts are with all the families affected by this shocking series of events.
“It is unimaginable to understand what they are going through.
“I am very aware of the impact that these horrendous crimes will have had not only on Nottingham and Nottinghamshire but also across the whole country.
“I am determined that we will work with community members, students from both universities and others impacted to reassure and support them. It is important that as a city we stand together.