"All nations need to unitedly stand against the menace of terrorism as it is a global phenomenon threatening international security and stability," she said in a statement.
Expressing her grave concern and grief, she extended condolences to the people of Afghanistan as also bereaved families and wished speedy recovery to the injured.
A car bomb hit a bus carrying employees of the ministry of mines just before 7 am (8 am IST), according to Afghanistan interior ministry spokesman Najib Danish.