A cheating device that resembles an eraser was confiscated on Sunday by the police during the national entrance exam for postgraduate studies in Chaohu, Anhui province.

Two suspects have been detained in Northeast China's Jilin province for their involvement in the sale of high-tech devices for cheating on the 2011 national entrance exam for postgraduate studies, as authorities pledged to thoroughly investigate the case.

The move follows a report on Sunday by China Central Television (CCTV), which revealed that nearly 80 percent of the answers accessed through the devices at an exam on Jan 15 in Siping, Jilin province, matched those supplied afterwards by the official training body.

The Ministry of Education (MOE) dispatched a working group to the city, which has confiscated the exam papers and is checking surveillance footage from the exam venue.

"Two suspects have been arrested and are charged with providing cheating devices to examinees in Changchun on Jan 17," Tang Yamin, deputy head of the publicity department in Siping, was quoted by People's Daily as having said.

"Nineteen cases of deception were detected among nearly 2,000 examinees, including seven instances of high-tech cheating, 11 of plagiarism and one ghost test-taker," he said.

It has been reported that provincial education authorities have begun to follow suit by checking the surveillance footage of all examination venues for suspicious behavior, including examinees who began to write their exam papers one hour after the test formally began and those who frequently looked at their wrist watches or touched their ears during the test.