Delhi's Patiala House Court on Thursday granted seven days custodial remand of all four accused persons arrested in connection with the Parliament security breach matter. As the Delhi Police Special Cell's probe into the incident progressed, some explosive information came out. According to the initial investigation, all accused have known each other for years and the incident was well-coordinated and meticulously planned. Earlier, in a major security breach on the anniversary of the 2001 Parliament terror attack on Wednesday, two persons -- Sagar Sharma and Manoranjan D -- jumped into the Lok Sabha chamber from the public gallery during Zero Hour, released yellow gas from canisters and shouted slogans before being overpowered by some MPs. Around the same time, two other accused -- Amol Shinde and Neelam Devi -- sprayed coloured gas from canisters while shouting "tanashahi nahi chalegi" outside Parliament premises. Police said the four were part of a group of six people who planned the incident.