Pakistan, July 25 -- Pakistan's security forces have killed three more terrorists during an ongoing intelligence-based operation (IBO) in the Khad Kocha area of Balochistan's Mastung district, raising the total number of militants killed in Operation Al-Azm to 13, according to state media and security officials.

Read More: Five terrorists killed during operation in Mastung

The operation was launched under an indefinite curfew following Wednesday's attack on a Karachi-bound passenger coach travelling from Quetta, in which three people were killed and five others injured.

According to security sources, the latest phase of the operation resulted in the elimination of three additional terrorists. Officials said six militants were killed on...