Kolkata (West Bengal) [India], Sept. 7 : Kolkata's LalBazar Police Control Room on Wednesday received a call for an unknown number at 1. 24 a.m. which informed the police that a person named Arshad is planning to blow up the Kolkata Airport. The call was made by from 3615188371 number and a male speaking in hindi gave this information. The caller also informed that the mobile number of Arshad was 8697872895. Security has been stepped up at the Airport after the anonymous call..