Aman Naeem Tandel was among the four youths from Kalyan who had left for Syria in 2014, purportedly to fight for the terror group ISIS.
"Tandel's father got a call informing about his death in Syria," the official said.
Aman's father Naeem Tandel, who lives in Govindwadi area of Kalyan, got a call late Saturday night from an unidentified number, the police official said.
Earlier this year, an ISIS video purportedly showing Aman among others and threatening to avenge the "killings of Muslims in Kashmir, Gujarat and Muzaffarnagar", had surfaced.
Aman was reportedly in touch with his family over the phone until the end of last year.