One civilian and two suspected terrorists were killed on Friday when unidentified gunmen attacked Peshawar's Christian Colony, Pakistani security sources said.
An ongoing firing between the gunmen and security personnel reportedly began around 6 a.m., when five to six terrorists attacked the colony, the sources told DawnNews.
The gunmen were reportedly wearing suicide jackets, the sources said.
The sound of explosions was heard in the area, eyewitnesses claimed, and a helicopter was spotted conducting aerial surveillance.
Additional contingents of security forces, including police, Frontier Corps and Pakistan Army commandos have been deployed to the area and an operation is ongoing, DawnNews reported.
The colony lies near the Pakistan-Afghanistan border.