In Pakistan, at least 30 people were killed and 100 others injured as three powerful blasts ripped through a crowded Sufi shrine near Dera Ghazi Khan in Punjab province today.A government official said, the first blast occurred at the main entrance of the Sakhi Sarwar Darbar located about 30 kms from Dera Ghazi Khan. The two other blasts went off inside the shrine soon after a rescue operation had been launched at the site.A doctor in charge of emergency rescue service in the area said, that about 20 of the injured are in a serious condition. The injured included elderly persons, women and childen.About 60 of the injured had been taken to hospitals in Dera Ghazi Khan, Multan and other nearby cities. The remaining were being transported to hospitals.Officials said rescue operations had been affected as the shrine was located at a distance from the main cities.TV news channels reported that a suspected suicide bomber was captured by rescue workers. No group claimed responsibility for the attack.