The militants released a Chinese engineer held hostage for nearly six months ahead of the cease-fire announcement.
The US, Pakistan coordinate troops to prevent militants from fleeing to either side.
The special representative launched his three-day visit in Pakistan Tuesday with an aim to 'listen and learn,' but also to urge the US ally to eliminate its militant havens.
The scientist confessed in 2004 to selling Pakistan's nuclear secrets to Iran, Libya, and North Korea.
Taliban struck a police station Wednesday. Many police are resigning because of death threats.
Thirty officers were later freed. A Pentagon report is expected to urge a harder line against militants.
Gunmen abducted John Solecki, head of the UN refugee agency in Quetta, on his way to work Monday.
The Army launched fresh operations this week, following mounting pressure to retake the onetime tourist idyll now controlled by ultraconservative militants.
The curriculum, critics charge, promotes revisionist views and intolerance. Others say they don't see such imbalance.