RAB has arrested Mushfiq Uddin Togor (50), one of the prime accused in the 2002 murder of BUET student Sabekun Nahar Soni.
He was captured from Azimpur on Thursday with a revolver and 156 rounds of ammunition.
Soni, a 1999 batch student of chemical engineering, was killed on June 8, 2002, when she was caught in the crossfire during a clash between two factions of Jatiyatabadi Chhatra Dal on the BUET campus.
RAB will brief the media with further details today.