At least two people were killed and 12 others injured when a bomb exploded near a government office in Pakistan's southwest Quetta city on Thursday, local media reported. Urdu TV channel Samaa said that the bomb went off near the National Database Registration Authority in downtown Quetta, the capital of Balochistan province. The injured have been admitted to Civil Hospital Quetta where at least three of them are said to be in critical condition. No group has claimed responsibility for the attack yet. Police cordoned off the scene for investigation.