Vice-president Bhairo Singh Sekhawat, Lok Sabha Speaker Somnath Chatterjee, UPA chairperson Sonia Gandhi, former prime minister Atal Bihari Vajpayee were among those who observed a minute's silence as a mark of respect for the deceased.
Nine people were killed and 16 wounded when five militants allegedly affiliated to the Jaish-e-Mohhamad (JeM) carried out a suicide attack on the Parliament three years ago.
Security forces had killed all of them in a 45-minute gun battle. One militant died when the bomb wrapped around his body blasted.
The parliamentarians praised the security forces for their timely action, which averted what could have been a tragedy of vast magnitude.
Photograph: Saab Press