Workmen in York discovered what was believed to be an unexploded "World War" mortar bomb this afternoon.
The park and ride site where the discovery was made at 3.55pm was evacuated as bomb disposal experts attended the scene.
Professor David Fleming, Vice Chancellor of York St John University, said: “It is with great sadness that the University has learned of the death of Megan Roberts, a second year Fine Arts student.
“Since Megan was reported missing the University has been working closely with police and providing support for Megan’s fellow students and members of staff.
“Megan was a bright enthusiastic student, with a love of painting. She showed dedication to her studies and was popular with her fellow students as well as by all staff who met her and had the pleasure of working with her.
"She shared an area of the Art studios with a group of close friends who shared many of her interests in art and life, often mixing the two while working together on their creative projects in the evening.
"She will be sorely missed by all within the Fine Arts team and across the wider University community.
“Our thoughts are with Megan’s family and many friends at this very difficult time.”
A body found in the River Ouse on Sunday has been identified as that of missing York student Megan Roberts, police have confirmed.
Roberts' parents have now been informed, and released statements through North Yorkshire Police website paying tribute to their daughter.
Her mother, Jackie Roberts, thanked the public and emergency services for their support in the search for Megan.
"Megan was an intelligent, talented and beautiful person whose kindness and sense of humour will be greatly missed by everyone who knew and loved her," she added.
Jason Roberts, Megan's father, added: "Megan was a wonderful, kind and loving daughter who will be missed by many."
North Yorkshire Police have confirmed that a body found in the River Ouse has been identified as the missing student Megan Roberts.
The spot at Acaster Malbis near York where a woman's body was found by a walker yesterday afternoon. It is feared it could be that of the missing York student Megan Roberts who disappeared in January. Her family have been told of the discovery by North Yorkshire Police.
ITV News correspondent Debi Edward, who was in court for the verdict, said the former nursery worker Sophee Redhead "broke down" after being acquitted over the death of a three-year-old in her care.
York College have issued a statement over the death of toddler, Lydia Bishop:
The college took the decision to close the nursery immediately after the tragedy, and say it will not reopen.
A jury has cleared a nursery school teacher of the death of a toddler in her care.
Sophee Readhead wept as she was declared not guilty of manslaughter or a breach of health and safety.
Three-year-old Lydia Bishop choked to death on her first full day at the York College nursery when she became tangled in a rope on an outdoor slide.
York College nursery has been found guilty of one charge of a health and safety breach
Police searching for missing York student Megan Roberts have said say the most probable scenario is that she "entered the river" while "heavily affected by alcohol".
Superintendent Phil Cain described the last known movements of the York St John University student almost a week after the 20-year-old went missing in the city.
Mr Cain said: "The strongest and most probable line of inquiry being pursued by police is that Megan, affected by alcohol, has entered the river."
Megan, who's 20, was last seen in the early hours of last Thursday morning while out with friends on Rougier Street near Lendal Bridge in York.