Amritsar, Dec. 13 -- Several schools here received bomb threat emails on Friday, triggering evacuation of students and prompting authorities to launch anti-sabotage checks. Search operations were conducted at all the school premises, but nothing suspicious has been found so far, officials said, urging citizens to avoid panic, and adding that the incident is under investigation. Chaotic scenes unfolded on Friday morning as panic-stricken parents rushed to schools to pick up their wards while the district administration ordered the closure of schools across Amritsar....