Detective Chief Inspector Alison Rowland, from Serious Crime Branch, 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.
"I am appealing for information from people who were in the Market Place area on Saturday 30 July around 2pm to contact us. We are particularly interested in speaking with the drivers of the following vehicles who we know were in that area on Saturday:
• Grey coloured BMW X3 or X5
• Blue coloured Ford Focus
• Grey coloured Vauxhall Astra
• Silver coloured Suzuki jeep
"Police will continue to proactively police Lisburn to prevent such attacks and would encourage public support to help us keep our community safe."
Detectives can be reached by calling 101 and asking for the Lisburn bomb enquiry team or, if people would prefer to provide information without giving their details, they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111.