Detectives from the Police Service of Northern Ireland's Major Investigation Team have arrested two people in connection with the disappearance and murder of Lisa Dorrian.

A 40-year-old woman was arrested in Bangor on Wednesday, 25 February, while a 42-year-old man was subsequently arrested in Scotland. Both individuals were detained on suspicion of murder, assisting offenders, withholding information, and preventing a lawful and decent burial.

The 25-year-old victim was last seen alive in Ballyhalbert, County Down, on the night of Sunday, 27 February 2005. Police believe she was murdered that night or during the early hours of the following morning.

Detective Chief Inspector Kerrie Foreman, who acknowledged the assistance of Police Scotland and the PSNI's Cross-Border Transit Officers, noted that the arrests have been made just days before the 21st anniversary of the case. "The arrest comes just days before the 21st anniversary of Lisa's disappearance and murder," Detective Chief Inspector Foreman said.

"Lisa was last seen alive on the night of Sunday 27 February 2005 in Ballyhalbert in County Down, and we believe she was murdered that night or in the early hours of the following morning. We remain determined to provide justice for Lisa's family, and I would appeal to anyone with information about her disappearance and murder to contact detectives on 101."

The Detective Chief Inspector added: "It's almost 21 years since Lisa's disappearance and murder. That's 21 years of torture for a loving family. I am keen to take every opportunity to encourage anyone with information to do the right thing and come forward."

Both suspects remain in police custody at this time.

Anyone with information is urged to contact detectives on 101. Alternatively, information can be provided anonymously to the independent charity Crimestoppers on 0800 555 111 or online at www.crimestoppers-uk.org.