After keeping cops on their toes for more than an hour with hoax calls in which he claimed he had planted bombs at various places in the city, 19-year-old Masook Mehmood Shaikh was arrested Wednesday night by the Crime Branch.

Masook Shaikh, who said he did it all for fun, has been booked for criminal intimidation and public mischief; he has been handed over to the Azad Maidan police