Mumbai: Two young men from Bhiwandi were brutally stabbed to death by unidentified persons in a slum colony in the powerloom town. The unknown assailants attacked five members of a family in a slum colony in Valpada locality around 1.00 a.m. killing one person on the spot while another succumbed to his injuries on way to a hospital. The severely injured couple is said to be in a critical condition. Police has registered a case under various sections of the IPC against the unknown killers, for whom hunt is on.