Indians should at least of ashamed of themselves that they were not able to provide proper security to the Pakistani Nationals. Whoever did this terrorist activity is a seperate issue. The way even normal checking was not done seems that may be some state agencies are even involved in it.
For all those who have been barking above. I would only say that even if every incident is related to Pakistan in the past (which infact doesn't) even then how can you just conclude in less than 24 hours that it has been done by Pakistanis. Indian intellegence agencies are a total failure. Easy salaries, isn't it. Whatever happens. Just say LET. For your kind information, Indian media always refer to LET but tell me how many terrorist activities around the world have been done by LET of JEM. The only activity by them is in Kashmir.