ISLAMABAD, Pakistan (CNN) -- Two dozen people believed to have been kidnapped by the Taliban were still missing Wednesday, Pakistani authorities said.
The Pakistani army rescued a group of 80 students and staff members Tuesday, but 48 people remained unaccounted for from Monday's abduction, police said.
Forty-six are students, and two are teachers, police said.
The abduction took place in the northwest tribal region, where the military has waged a bloody battle against Taliban insurgents, police said.
Militants attacked a convoy of 27 vehicles carrying 350 students and teachers that departed Razmak Cadet College in the Federally Administered Tribal Areas. Watch scenes of other recent Taliban attacks »
The heavily armed Taliban fighters attacked about eight vehicles, while the others sped away.
CNN's Ingrid Formanek contributed to this report.