The Whatsapp helpline of Mumbai traffic police received a message from a Pakistan number containing a threat to blow up Maharashtra Chief Minister Devendra Fadnavis' office in Mantralaya, an official said on Friday.
The message, from a person who identified himself as Malik Shahbaz Raza, was received on Thursday, following which a case was registered at Worli police station, he said.
"The threat message is in English. A case has been registered against an unidentified person and a probe has begun," the official said.
The helpline of the Mumbai traffic police has received such messages earlier as well.
In November last year, a message threatened to harm actor Salman Khan and sought Rs 5 crore as extortion.
In December, a threat message against Prime Minister Narendra Modi led to the arrest of a 37-year-old Jharkhand resident from Rajasthan.
On February 21 this year, a message was received containing a threat to blow up the vehicle of Deputy Chief Minister Eknath Shinde, following which two persons were arrested from Buldhana.