Scores of students were unable to take the test on Monday as problems continued to plague the test centres.

Swinging into action, the government on Monday sought a report from the Convener of Common Admission Test (CAT) Satish Deodhar on the ongoing disruption of the computer-based entrance test for admission into IIMs.

The HRD Ministry shot off a letter to Mr. Deodhar, asking him to submit a factual report on the whole issue of disruption in the test, which is being conducted by an American firm Prometric, a ministry official said.

Due to a “virus attack” in the computers, nearly 4,000 students could not appear in the test during the first two days of the 10-day long staggered entrance exam that started on Saturday.

Scores of students were unable to appear in the test at several centres on Monday as technical glitches continued to disrupt the exam.

Candidates could not appear in the test at a few centres in Mumbai, Bangalore and Ghaziabad owing to malfunctioning of computers at these places.

About 2.41 lakh students are scheduled to appear in the test for admission into seven IIMs and a few other B-Schools.

The American firm Prometric signed a $40 million contract by the Indian Institutes of Management to computerise the prestigious CAT.