The first rank holders from the State are Duggineni Venkata Paneesh from Rajampet (Kadapa district), Karnam Lokesh from Narasaraopet (Guntur), Pasala Veera Siva and Kanchanapalli Rahul Naidu.
The last session of the test conducted in late August and early September was marred with controversy as at least one examination centre in Haryana was compromised with its devices hacked.
Indian Institute of Technology, Kharagpur, which is conducting JEE-Advanced this year, has not announced a new date for registration and has asked candidates to wait for an update.
Congress also demanded answers from the BJP government, saying the Education Ministry and the National Testing Agency are responsible for conducting examinations in a transparent manner.
The CBI has booked the institute, its directors, their touts/associates and staff posted at the examination centre and other unknown persons, CBI Spokesperson RC Joshi said.
Usually, there is about a month-long gap between the two attempts that gives the students time to work on their shortcomings with an aim to increase their score or rank.
The results of the two editions, which were postponed in view of the COVID-19 pandemic, are likely to be announced in August.
However, a final decision in this regard is yet to be taken and the Ministry is in process of reviewing the COVID-19 situation across states and UTs.
The April edition of the exam was also postponed following an exponential rise in coronavirus cases.
The revised dates will be announced later on and at least 15 days before the examination, the order isuued by the National Testing Agency said on Sunday.
The exam was conducted from March 16 to 18 and a total of 6,19,368 candidates had registered for it.
IIT aspirants can now appear for the examination twice a year.