Mr. Marwaha, who was arrested on February 8, was sent to five-day police custody by the court.
The investigators said that Mr. Marwaha revealed he used to communicate with alleged ISI agents through a dating app.
The officer added that they have also written to Facebook to provide details the two accounts in the name of women who befriended Mr. Marwaha.
The alleged ISI agents suggested that the conversations be shifted to the dating app.
Mr. Marwaha had signed up for the premium membership of the application.