The investigation officer (IO) of the case placed the petition before the Court of Chief Metropolitan Magistrate as his fourth-phase remand ended yesterday.

The IO said an unidentified youth, aged around 27, was gunned down in Mirpur on August 4 last year.

Earlier, the Rapid Action Battalion (Rab) on June 28 took Arman on a seven-day remand in connection with the killing of an unidentified youth in Mirpur in September last year.

Arman and his accomplices killed a man on September 7 last year at Lalkuthi First Colony in Mirpur.

Rab-4 Sub-Inspector Rifat Khan Rajib, who is also the investigation officer (IO) of the case, is interrogating Arman.

Arman will be produced before the court on completion of his seven-day remand today and the Rab may seek remand in the murder case. After his appearance before court, he will be shown arrested in the case, court sources said.

Arrested on June 4, Arman had been on remand for the last 31 days -- the first 10 days in an arms case, the second seven days in a murder case, the third seven days in another murder case and another seven days in a separate murder case.