Ms Pender, who was aged 25 and seven months pregnant when she went missing, was last seen at around 6am on August 23, 1996, at her flat in Church Street in Tullamore.
On Monday, Gardai [Irish police] said based on the information available, the missing person investigation had been re-classified as a murder investigation.
A search operation was launched on open ground in Co Offaly, which will be excavated and technically and forensically examined over the coming days.
Over the past 28 years, An Garda Síochána said they have carried out "significant" inquiries into what happened to Fiona.
This includes thousands of documents and reports, 300 statements of evidence and a number of exhibits.
Extensive searches have been carried out and five people were arrested over the years in connection with the investigation.
Fiona Pender crime scene being investigated by police.
A fresh appeal for information has been issued to anyone with any information to come forward and speak to the investigation team.
"Gardai continue to appeal to any person who may have previously come forward who felt they could not provide Gardai with all the information they had in relation to this matter, to contact the investigation team again," it said.
"An Garda Siochana appeals to anyone with any information, no matter how small or insignificant you might believe it to be, to contact Tullamore Garda Station on 057 932 7600, or any Garda Station.
"Anyone who wishes to provide information confidentially should contact the Garda Confidential Line on 1800 666 111."
Read more
* This article was originally published on Extra.ie.
Comments