The physics paper for class 10 was leaked in Sukkur before the matric exam on Sunday.
The leaked paper was shared among students via WhatsApp.
Last week, Sindh Chief Minister Murad Ali Shah called the chairperson and commissioners of the Board of Intermediate and Secondary Education (BISE) after the Secondary School Certificate (SSC) examination’s English paper was leaked before the exam was scheduled to begin in Sukkur and Mirpurkhas.
The chief minister sought a report from the boards on the negligence and wants them to investigate how the paper got leaked.
Earlier, the physics paper of Class 11 was also leaked through WhatsApp just half an hour before the exams were scheduled to begin. Students across Sindh are taking their matriculation exams after a series of delays.
The education department has set up 365 exam centres across the province where 367,606 students are taking their exams.
The government has also imposed Section 144 of the PPC for the exams.