Two US universities on Friday asked all employees and students to leave their campuses after the institutes received separate bomb threats.
A 40-year-old software engineer was arrested here on charges of sending email bomb threats to various colleges and hospitals in the city, police said.
British police say they are investigating bomb threats that dozens of British universities have received via email.
The two of planes of Pakistan
International Airlines, which received bomb threats while flying and were grounded at Istanbul and Kuala Lumpur, have been cleared to resume their flights.
Day in Pics: 19th September
Showbiz World - September 19, 2014
iPhone6 fever grips the world