The Patiala House Court in the national capital reserved the order on remand application of Delhi Police.
Meanwhile, lawyer Nikita Jacob and engineer Shantanu Muluk on Monday joined the probe in connection with the toolkit case and are being questioned at the Delhi Police's Cyber cell office in Dwarka, a senior police officer said.
"Both Jacob and Muluk were served notice to join the probe and are currently being quizzed in connection with their alleged role in the toolkit case," the officer said.
Earlier, Disha Ravi was sent to three-day judicial custody by a Delhi court on 19 February.
Additional Chief Metropolitan Magistrate Akash Jain sent Ravi, 21, to jail after Delhi Police produced her before the court on expiry of her five-day custodial interrogation.
Police said that her custodial interrogation was not required for the time being and the agency may seek her further interrogation once her co-accused -- Shantanu Mukul and Nikita Jacob -- join the interrogation.
Police said Ravi was evasive during her previous interrogation and tried to shift blame on the co-accused.
Mukul and Jacob have been asked to appear before the investigating agency on February 22, the agency told the court.
The defence lawyer opposed the police plea and urged the court to release Ravi.
He further said that there was an apprehension of tampering of the evidence by police as the “case diary is not properly made...and in volume form. There's no ground to keep her in any custody, police custody or judicial custody. I (Ravi) ought to be released right now".
The court was also informed that the accused has moved a bail application which will come up for hearing on Saturday.
Last Sunday the court had sent Ravi to five-day police custody after it said her custodial interrogation was required to probe an alleged larger conspiracy against the government of India and to ascertain her alleged role relating to the Khalistan movement.
Ravi, arrested by a Cyber Cell team of the Delhi Police from Bengaluru on Saturday, was produced before a court here and police had sought her seven days' custody.
While seeking her custody, the police had told the court that the activist had allegedly edited the "toolkit" on February 3 and many other people were involved in the matter.
A "toolkit" is a document created to explain any issue. It also provides information on what one needs to do to address the issue. This might include information about petitions, details about protests and mass movements.
Earlier, the Delhi Police had asked Google and some social media giants to provide information about email id, URLs and certain social media accounts related to the creators of the "toolkit" shared by Swedish climate activist Greta Thunberg and others on Twitter in connection with the farmers' protest.
The Cyber Cell had lodged an FIR against "pro-Khalistan" creators of the "toolkit" for waging a "social, cultural and economic war against the government of India".
The case against unnamed persons was registered on charges of criminal conspiracy, sedition and various other sections of the Indian Penal Code (IPC).
The "toolkit" was aimed at spreading disaffection and ill-will against the government of India and creating disharmony among various social, religious and cultural groups, the police had claimed.