Chandigarh, April 17 -- Fresh bomb threat emails were sent out to at least three city schools on Wednesday morning, however, it was hoax, police officials confirmed. The city's educational institutions, administrative buildings and other public places have been getting a flurry of such messages since the beginning of the year. Earlier on Tuesday, a hoax bomb threat had been sent to the regional passport office. The fresh mail sent to St Stephen's School, Sector 45, Saupin's School, Sector 32-A, and Mount Carmel School, Sector 47 at 7.20 am - school opening hour - claimed the explosives had been planted at schools, the UT secretariat and even on Air India flights. Following the alert, police swung into action, and deployed bomb disposal squads, dog squads and Quick Reaction Teams (QRTs) at all the mentioned locations. Police officials said that standard operating procedures were strictly followed, with access controlled and evacuationscarried out where necessary to ensure safety of students and staff. Cyber police are alsoanalysing email headers, IP logs and other technical data to identify the origin of the message....