A court on Sunday placed suspended Feni  Police Station OC Saiful Islam, a member of the district Detective Branch, on another 4-day remand, in a case over snatching 20 gold bars from a businessman on Dhaka-Chattogram Highway on August 8.Feni Senior Judicial Magistrate Kamrul Hasan passed the order after the investigation officer of the case produced the accused before court and prayed for a 7-day remand.The same court Saturday placed five other Detective Branch officials involved in the incident - sub-inspectors Motaher Hossain, Mizanur Rahman, Nurul Haque and assistant sub-inspectors Abhijit Barua and Masud Rana -  on a second spell of 3-day remand. Also read: Snatching gold bars: 5 Feni DB officials remanded again They were initially remanded for three days on August 11, said Golam Jilani, a police inspector posted at Feni court.Meanwhile, the case was handed over to the Police Bureau of Investigation (PBI) Sunday.Feni district police Superintendent Khondokar Nurunnabi handed the case over to PBI Superintendent Md Asaduzzaman.PBI Inspector Shah Alam, investigation officer of the Nusrat murder case, has been given the responsibility to investigate the case now.Six members of the DB of Feni police were arrested Tuesday night for allegedly robbing a businessman of 20 gold bars worth Tk 1.24 crore.The same day the six accused were temporarily suspended by the district police authority. Also read: Six detectives rob bizman of 20 gold bars in Feni, heldAccording to police sources, some 15 of the 20 looted gold bars have been recovered from the possession of the accused, and the remaining 5 gold bars were not recovered yet.As per the complaint of Gopal Kanti Das, the six detectives intercepted Gopal's car on the road under Fatehpur flyover on the Dhaka-Chattogram highway, looted the gold bars and left the spot on August 8.A robbery case was  filed against the six at the Feni model police station.