On June 11, 2011 Dey was on his way back home from Ghatkopar where had gone to meet his mother Bina Dey. At 3pm, in Hiranandini Gardens in powai area, he was shot by 4 bike-borne sharpshooters.

After the attack he was rushed to Powai Hospital but due to lack of facilities he was taken to Hiranandani hospital where he was declared brought dead there.