MANSEHRA, Dec 27: The district Nazim, Mohammad Azam Khan Swati,  has asked the provincial government to conduct a probe into the use of sub-standard material in the construction of the four-kilometre patch in the Garhi Habibullah-Brarkot Road.

The sources said on Friday that the Nazim located the alleged irregularities in the Rs20 million project during a surprise visit  to the site.