A man has been detained for allegedly sending an e-mail to Delhi Chief Minister Arvind Kejriwal threatening to kidnap his daughter, police said on Tuesday.
The accused, Vikas Rai, is a resident of Samastipur in Bihar and has been preparing for competitive exams in Delhi, they added.
Police have also seized the phone he allegedly used to send the e-mail. Further details are awaited as his questioning is underway.
The Chief Minister's Office had received an anonymous e-mail on January 9 which was forwarded to Delhi Police Commissioner Amulya Patnaik.
A Protective Service Officer has been deployed for Kejriwal's daughter by North district Police, officials said.