Islamabad, Sep 28 (IANS): At least seven people were killed and 11 others injured Sunday when a bomb went off at a camp of Internally Displaced Persons (IDP) in Pakistan, a media report said.

The bomb explosion occurred inside a camp bazaar in Khyber Pakhtunkhwa province's Hangu area where the tribesmen from Orakzai tribal region were residing, Dawn online reported citing police sources.

Hangu Deputy Superintendent of Police (DSP) Falak Nawaz told Dawn that the explosion was caused by a remote controlled improvised explosive device (IED).

"The explosive was planted on a motorcycle," a police official said.

The injured were immediately taken to District Headquarters Hospital for treatment.

Hangu, racked by sectarian violence, had been on the frontline of a seven-year-long Taliban insurgency. It borders the semi-autonomous Federally Administered Tribal Areas (Fata) province.

It also borders the northwestern tribal region of Orakzai, one of Pakistan's seven lawless districts on the Afghan border considered to be the hub of Taliban and Al Qaeda-linked militants, the Dawn report said.