Delhi Police on Sunday said that Tomar was not cooperating in the investigation and was reluctant to answer questions during interrogation.
Police officials also said that they may take Tomar to some colleges in Delhi and NCR region to get more details in the case.
Meanwhile, AAP leaders were upset with Tomar as he had mislead Arvind Kejriwal. Tomar maintained that his degree was genuine and that there was nothing wrong with it.
Police slapped cases of cheating, criminal conspiracy and forgery after picking up Tomar from his office and then dramatically taking him into custody.
AAP leaders on the other hand cried foul over Tomar's arrest saying that it was a planned thing.