Massey University's Auckland campus is investigating reports of its students offering ghostwriting services for assignments for cash.
In a message to students, university provost Professor Giselle Byrnes says the students were advertising their services on WeChat, a Chinese social media messaging service.
The investigation comes after Otago University said yesterday the integrity of one of its medical exams was compromised after allegations of cheating.
Student magazine Critic Te Arohi quoted a letter from Dunedin School of Medicine dean Professor Barry Taylor to third year students saying all results had been withheld pending further investigation.
Medical students now feared they would have to resit their exam.