Pakistan suicide bombing: Four killed, several injured in Karachi blast

A suspected female suicide bomber killed three Chinese teachers in Karachi on Tuesday, police and officials said, in the first major attack this year against nationals of long-time ally China working in Pakistan.
The three were among passengers on a minibus returning to Karachi university after a lunch break when the bomb exploded at the entrance to the university’s Confucius Institute, killing the Chinese and a Pakistani national, police and a university employee said.