ISLAMABAD, Dec. 22 (Xinhua) -- At least three soldiers were killed in firing from the Afghan side of the border on Friday evening, local Urdu media reported.

According to the reports, terrorists fired from across the border on a security forces' check post in Mohmand Agency, an autonomous tribal area located along Pakistan-Afghanistan border.

Security forces and rescue teams reached the area and launched an investigation into the incident.

No group or individual has claimed the attack yet.