The law enforcers arrested former GM of PSO Zulfikar Ali Jafri and shifted him to an undisclosed location for interrogation.
Sources said the arrest was linked with a corruption inquiry against former federal minister and Pakistan Peoples Party (PPP) leader Dr Asim Hussain.
Zulfikar Ali Jafri served as senior GM of PSO under Dr Hussain, who was then the advisor to PM for Ministry of Oil and Natural Resources.
He is being interrogated about financial irregularities in PSO and the corruption case against Dr Asim Hussain.
It is pertinent to note here that Zulfikar Ali Jafri was also a neighbor of Dr Hussain.