The bench noted that "conflicting versions about the incident demands an inquiry to uncover the true facts".
This is the first full-scale review of VIP protectees by the Union home ministry after the Modi 2.0 government took charge.
Utsav Sharma, who inflicted grievous wounds on murdered teenager Aarushi's father Rajesh Talwar, was on Wednesday remanded in judicial custody till February 8 by a local court in Ghaziabad.