A house rammed by a car before the fatal A66 crash in Middlesbrough belonged to the father of a teenager who died in the incident.
Cole Worthy, 17, was one of five young men who died when a Volkswagen Passat travelling in the wrong direction hit a Cleveland Police armed response vehicle, also killing two police officers.
The force said that in the early hours of Saturday, and the previous night, it had received multiple reports of two cars driving dangerously around the town and a Volvo XC60, believed to be linked to the Passat, was seen ramming properties.
There is no suggestion Worthy’s father was involved in criminal activity.
PC Tom Clough, 38, and PC Matthew Blades, 37, died in the crash, as did Michael Robert Cahill, 23, Jacob Matusiak, 23, Makai Saddington, 18, Theo Rae, 17, and Worthy.
The Independent Office for Police Conduct said officers had been pursuing the Passat for almost seven minutes after it was connected to earlier alleged criminal activity, but the pursuit was abandoned 10 seconds before the crash when it turned on to the dual carriageway.
Both vehicles were operating with cloned number plates but were picked up by automated number plate recognition technology.