Noida's illegally built Supertech Twin Towers had its first trial blast on Sunday. Noida authority had roped in Edifice Engineering and Jet Demolitions to carry out a test blast in the afternoon. Residents of nearby societies, including, Emerald Court and ATS Greens Village have been asked to stay indoors during that period. But the actual demolition of Supertech's Apex and Ceyane towers will take place on May 22. Watch this video.