The Torkham border is the main point of transit for travellers and goods between Pakistan and landlocked Afghanistan.
TTP has denied involvement in the Peshawar mosque blast, but officials say it has intensified attacks since November.
Most of those killed in the suicide bombing in Peshawar were police. More than 225 people were injured.
Hospital official says at least 88 killed, more than 170 others wounded in explosion in Peshawar, northwestern Pakistan.