The order came a day after the SSC, which conducts examination for subordinate services, recommended an inquiry by the CBI into the allegations of leak of questions of the Combined Graduate Level (Tier-II) Examination 2017 held from February 17 to 22.
"We have accepted demands of protesting candidates and have given orders for CBI inquiry. The protest of the students should stop now," Mr Singh told reporters.
Job aspirants have been protesting outside the commission's office here since February 27, seeking a CBI probe into the alleged paper leak.
Yesterday, Delhi BJP chief and MP Manoj Tiwari, along with a delegation of the candidates, met SSC chairman Ashim Khurana seeking CBI probe.
Later, in a statement, the SSC chairman had said the commission agreed to recommend to the Department of Personnel and Training to request the government to conduct a CBI enquiry into the allegations of leak of questions of Paper-I on February 21, and other related issues.
The SSC conducts examinations for recruitment to lower categories of posts in the central government.