A bomb which closed a busy shopping area in Northern Ireland was targeting a person, police said.
Detectives are investigating if the device found in Lisburn on July 30 had fallen from a vehicle.
Reports have suggested it may have been aimed at a member of the security forces.
PSNI detective chief inspector Alison Rowland said: "Extensive enquiries are ongoing and as yet we have been unable to identify how this device was in Market Place but we believe the target was an individual rather than a location."
A controlled explosion was carried out on the object and it was removed for examination during a security alert which lasted several hours and forced the evacuation of businesses.
A vehicle was later seized in the Lagmore area of west Belfast.
Police appealed for the drivers of four cars in the area, a grey BMW X3 or X5, blue Ford Focus, grey Vauxhall Astra or silver Suzuki jeep, to contact them.
Four churches share £200,000 to tackle urgent repairs
Irish leaders condemn fuel protests as wrong and ‘not in the national interest’
Police probe suspected arson attack at Coleraine apartment block
More than 100 firefighters tackle Omagh industrial fire as casualty airlifted