TerrorismSuicide bombing stokes security concerns for Chinese in Pakistan
Blast tests Beijing's patience with separatist group behind other deadly attacks
Police officers stand guard near a passenger van after a blast at the entrance of the University of Karachi's Confucius Institute. Three Chinese teachers were killed in the suicide bombing. © Reuters
ADNAN AAMIR, contributing writer
ISLAMABAD -- A suicide bombing that killed three Chinese language teachers in Karachi will aggravate concerns about the safety of thousands of Chinese living in Pakistan and test Beijing's patience with repeated attacks by a separatist group behind the deadly blast.