Taking a dig at AAP supremo Arvind Kejriwal, who demanded the resignation of the central government over an attack on Bollywood star Saif Ali Khan, the BJP on Sunday said the former Delhi chief minister has been mum since learning that the attacker was a Bangladeshi infiltrator.

The Mumbai Police said earlier in the day that Mohammad Shariful Islam Shehzad, a Bangladeshi national who had illegally entered India and changed his name to Vijay Das, was arrested from Thane in connection with the attack on Khan on January 16.