Mumbai Police registered an FIR against unidentified persons for posting obscene comments and issuing death threats to journalist Rana Ayyub on her social media accounts, a police official said on Monday.

The FIR was registered by the west region cyber police station on Sunday under various sections of the Indian Penal Code (IPC) including 354-A (Sexual harassment), and the Information Technology Act on a complaint filed by Rana Ayyub, he said, adding that further investigation is underway.