I still couldn't be sure that they were the culprit. I did not get an opportunity to analyse him further throughout the rest of the exam.
I would have to try again during the next exam.
We were given a short ten-minute break as everyone was let out to have a snack and some water. I tried to glimpse at the students as we entered back into the exam hall. However, I didn't get any information due to the flood of people entering the hall. There were also a very large amount of people who didn't have their student cards due to them being stolen, so I couldn't gather any useful information.
Throughout the next exam, English, I was unable to identify any suspicious people.
We were once again let out for our ten-minute break, and I wondered if there was a better method.