Police investigating the murder of Caroline Graham have called in forensic specialists to examine items at a house at the centre of the hunt.
PSNI searches of a property in the Hanover Street area of Portadown where the 19-year-old lived with her boyfriend when she disappeared in 1989 are continuing today.
The house was subjected to a detailed examination by two PSNI victim recovery dogs.
As a result of indications by the dogs, forensic scientists have been asked to examine certain items in the property.
The search continued today and is expected to run into a third day, police said.
Detectives have also reissued an appeal for two off-duty soldiers who are believed to have given Caroline a lift the night before she disappeared to come forward.