Islamabad, Pakistan (CNN) -- Security forces killed 40 militants who were among a group that attacked checkpoints in northwest Pakistan, leaving 11 soldiers dead, authorities said Saturday.
About 150 militants fired at five security checkpoints Friday, a government official said. The attack in Mohmand Agency injured 12 others.
The security forces pounded militant hideouts in Mohmand Agency with helicopter gunships, said Maqsood Amin, a senior government official in the area. Twenty-four militants were killed during retaliation Friday while 16 were targeted Saturday.
Mohmand Agency is one of seven districts in a volatile Pakistan tribal region on the Afghan border.