Dundee and Angus College campuses have cancelled classes after being hit by a cyber attack.
A number of college IT systems were affected, with students to not return until Tuesday.
It’s believed no student or staff personal data has been compromised.
The college said staff were “working around the clock to resolve these issues”.
A statement said: “This closure covers all classes including college students, school pupils, evening classes and student interviews.
“College staff are working around the clock to resolve these issues to minimise this obvious disruption to students.
“Due to our controls around students and staff personal data we do not believe that personal data has been affected.”
Police Scotland said it is aware of the incident and inquiries are at an early stage.