The Supreme Court on Wednesday dismissed a batch of petitions challenging the CBSE's decision to conduct a  re-examination of the Class  XII Economics paper on the suspicion of question paper leak.

"We cannot order the CBSE to not to hold the re-examination. This is not the jurisdiction of this court to direct the CBSE not to conduct the examination. It is the discretion of the CBSE or the concerned authority," a bench of Justices S A Bobde and L Nageswara Rao said.

The top court asked the students who have challenged the decision of the CBSE to appear in the examination if conducted by the authorities.

Senior advocate Sajan Poovayya, representing one of the petitioners, submitted in the court that one of the prayers which challenged the CBSE's March 28 decision of re-examination of the Class  X Mathematics paper, has become infructuous.

"The CBSE has announced that they would not hold the Class  X Mathematics examination as, after assessing the situation, it was found that alleged paper leak had no substantial impact," he said.

The bench dismissed five petitions filed by students and parents and said that the prayers made could not be considered.

Several petitions were filed before the apex court after the CBSE said on March 28 that the Class  X Mathematics and Class  XII Economics papers had allegedly leaked.

Besides challenging the CBSE's decision, the petitioners also wanted a CBI probe into the alleged paper leak, saying several incidents were reported from various states and the Delhi Police was not competent to hold the nation-wide probe.