LUCKNOW, June 23 -- With the staircase engulfed in smoke and cries for help echoing from inside, firefighters battling the deadly Aliganj blaze found themselves unable to enter through the building's only access route. As rescuers searched for another way in, allegations emerged that a biometric locking system at the entrance may have delayed the escape of those trapped inside. Among those who lost their lives was 23-year-old Sukhamani, an employee of a 3D animation company functioning from the building. According to his friend Yash, Sukhamani had been working there for the past four years and was among nearly 40 employees at office. Yash alleged that the office's main gate was equipped with a thumb-impression scanner for access control. When the fire broke out and rapidly spread through the premises, the gate allegedly locked automatically, creating difficulties for those trying to escape. "The office had a biometric entry system. After the fire spread, the gate locked automatically and it took time to open it. That delay made the situation much worse," Yash told reporters at the site. Authorities have not officially confirmed whether the biometric locking mechanism malfunctioned or played any role in hampering evacuation efforts. However, the claim is likely to be examined as part of the investigation. Chief fire officer Ankush Mittal said the smoke-filled staircase prevented firefighters from entering the building through the usual route. With no fire exit or secondary access available, rescue teams were forced to breach a wall of a neighbouring residential building to reach those trapped inside....