The cyber police of the Mumbai crime branch on Thursday arrested a 28-year-old man from Odisha in connection with the Bulli Bai case.

The accused, identified as Neeraj Singh, is an MBA degree holder and was involved in the planning of the app with the main accused, an officer said.

The Bulli Bai app had put Muslim women up for a mock auction by using their social media pictures.

“His role came to light during the interrogation of the accused who were arrested earlier, following which a team of the cyber police station was sent to Odisha and he was placed under arrest,” the officer said.

Mumbai police have so far arrested four persons in the case.

Earlier, Shweta Singh, 18, and Mayank Rawal, 21, had been arrested from Uttarakhand while engineering student Vishal Kumar Jha, 21, was picked up from Bangalore.

Neeraj Bishnoi, one of the alleged main conspirators in the Bulli Bai case, had been arrested by Delhi police from Assam.

A Mumbai court on Thursday rejected the bail pleas of Jha, Shweta and Rawat. A detailed order is not yet available.