Devika survived a bullet injury on her leg and was one of the eye-witnesses to identify the lone-captured terrorist of the attacks -- Ajmal Kasab.
Niranjan's lungs got punctured due to the impact of the blast of a grenade that was kept in the pocket of a slain terrorist and the officer died before being taken to hospital.
In a nearly 25-minute televised address to the nation, Modi said implementation of the lockdown will be strictly ensured in its second phase and detailed guidelines will be brought out on Wednesday to ensure that outbreak does not spread to new areas.
The development comes after a recent notification from the Union home ministry, which has permitted companies to resume manufacturing operations and reopening of shops in red, green and orange zones with certain riders.
The officials said the scattered remains of the bus, reduced to blackened bare frames after the blast, does not reflect that an improvised explosive device (IED) was used to target it.