A 21-year-old man has been arrested in connection with the death of student Karen Buckley, whose disappearance sparked a four-day search which ended today with the discovery of human remains at a farm.
Miss Buckley, 24, had not been seen since she was reported missing after a night out in Glasgow at the weekend.
The man detained by police last night was formally arrested this morning.
Remains found at a farm in north Glasgow where officers had been conducting a search have not yet been formally identified but relatives have been informed, Police Scotland said.
Miss Buckley, from Cork, was a first-year occupational therapy student at Glasgow Caledonian University.
She had arrived at The Sanctuary nightclub with friends at around 11.45pm on Saturday and at around 1am she told them she was going to the toilet. She failed to return and did not take her jacket.
Specialist police divers, a helicopter crew and search dogs were involved in the search for the qualified nurse who moved to Glasgow in February.
After Miss Buckley's handbag was found in Dawsholm Park on Tuesday the search moved to High Craigton farm in the north of the city.
Officers cordoned off land around the farm and near Windyhills Golf Club on a country road between Milngavie and Drymen and a number of support vehicles and fire engines were moved to the scene.
Police had previously appealed for information about a grey car spotted on the road between 11am and 3pm on Monday.
Earlier yesterday, officers had been searching a flat in Dorchester Avenue in Glasgow where the student was reportedly last seen.
Her family, from Cork in the Republic of Ireland, travelled to Scotland on Tuesday and at a press conference, her mother Marian Buckley, 61, said they were desperate to get their only daughter home safely.
A fundraising page set up by former classmates of Miss Buckley to cover her family's expenses while they are in Scotland has raised more than £3,000.
My thoughts today are very much with the family and friends of Karen Buckley— Nicola Sturgeon (@NicolaSturgeon) April 16, 2015
Ireland's minister for foreign affairs Charlie Flanagan said thoughts and prayers were with the Buckleys.
"I am greatly saddened by the news emerging that Scottish police believe that a body discovered near Glasgow may be that of Karen Buckley," he said.
"All of our thoughts and prayers are with Karen's parents, John and Marian, and with all of her family and friends at this tragic time.
"On behalf of the government, I wish to express appreciation for all that has been done by the Scottish authorities, and especially Police Scotland in Glasgow, to find Karen and to support the Buckley family throughout this very difficult time."
Consular staff have been helping the family since her disappearance. Sean Sherlock, a junior minister from the Cork area, added: "My thoughts and prayers are with the family and friends of Karen in Mourneabbey, Cork, Glasgow and throughout the world."