Three West African Examination Council (WAEC) examination papers - Oral English, Integrated Science and Social Studies papers - have leaked.
Some students in the Greater Accra and the Eastern regions had access to the examination papers between 12 midnight and 4 am on the day the papers were written, according to a report by the Daily Graphic.
The papers were circulated among the students mainly through social media platforms, particularly Whatsapp, the report said.
According to the report, a Whatsapp group named Lagadia was instrumental in disseminating the exam papers.
The group reportedly comes alive from 10pm, with expectant students asking their source when the questions will be leaked.
At dawn, the supplier of the papers then sends the questions to the group using a MTN phone number, the report said.
When the questions are received, some students copy answers on some parts of their body, which they refer to during the exams.
WAEC has been battling leakage of its examination papers for some time now.
In 2015, barely 48 hours to the start of the WASSCE, photos of some question papers began circulating on social media, raising questions about the credibility of the examination.
Last year, a similar leakage compelled the council to cancel five subject papers in the Basic Education Certificate Examination (BECE) — papers 2 of English Language, Religious and Moral Education, Integrated Science, Mathematics and Social Studies.