Megan Roberts: River search for missing student
28 January 2014 Last updated at 17:26 GMT
Underwater searches are being carried out to try to find a student who has been missing for five days.
Megan Roberts, 20, from Wetherby, West Yorkshire, disappeared in the early hours of Thursday after a night out at the Popworld nightclub in York.
Supt Phil Cain, of North Yorkshire Police, told the BBC's Danny Savage officers were increasingly concerned for Miss Roberts' safety and welfare.