New Delhi, Dec 15 (IANS) Aam Aadmi Party (AAP ) MP Raghav Chadha on Friday demanded an investigation and a discussion in Parliament in the major security breach on the 22nd anniversary of the 2001 terror attack, saying that government should hold discussion on the issue.

Chadha also raised questions about how the individuals passed multi-layered security checks, who allowed them in, and why security protocols were not properly maintained on the anniversary of the 2001 terrorist attack.