The incident occurred at a gymnasium located in New Mhada Colony in the city.
The deceased is identified as Sageer Ansari and the injured as Golu Chowdhary (19), Aavinash Mourya (24), and Ankit Singh (20), a Thane Municipal Corporation disaster cell official said.
The cause of the explosion is not known yet, he added.
Disclaimer: No Business Standard Journalist was involved in creation of this content