The financial capital was put on high alert today following a blast outside the Delhi High Court, in which nine people were killed and several others injured, police said.
As Ganesh Chaturthi is celebrated on a large scale here, policemen deployed across the city in view of the festivities have been informed about the blast. They have been asked to be on alert, a police official said.
"We are on high alert and taking all precautionary measures to prevent any terror attack during the festival. Security has been intensified at vital installations and around Mumbai courts," the official added.
Nakabandi has been ordered and every vehicle is being checked thoroughly, the official said.
The festival of Ganesh Chaturthi is celebrated widely in Maharashtra.
The blast took place around 10.15 am outside one of the entry gates to the Delhi High Court.