Police have launched an internal investigation into one of their traffic policemen for allegedly assaulting a motorcyclist who supposedly tried to escape from a roadblock along the Federal Highway in Petaling Jaya, Selangor.

According to Petaling Jaya district police chief Nik Ezanee Mohd Faisal, the incident took place between 8am and 9am today at KM28.3 of the highway heading towards Kuala Lumpur...