After a heated argument that turned to threats, the couple was dragged off the metro at the Dum Dum station and flogged by a mob of middle-aged to elderly people, according to ABP.

The boy was kicked, punched and pushed and when the girl tried to save him, she received a few blows as well, the report stated.

Later, other passengers from an adjacent compartment alighted to help the couple and save them from the unhinged mob.