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.
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