A witness of a rape case was killed in an attack reportedly by rival group at Borobasbaria rea of Bagerhat sadar upazila on Tuesday night.
The deceased was identified as Shamim Hawlader, 36, son of Yusuf Hawlader. He was witness of the gang-rape case filed with Bagerhat Model Police Station on July 25.
According to local sources, relatives of accused in the rape case attacked Shamim around 7:30pm, leaving him critically injured.
Later, he was rushed to Khulna Medical College Hospital where he succumbed to his injuries around 11:30pm.
S M Ashraful Alam, inspector of Bagerhat district police (media cell) said that police visited the spot.
Besides, drive is underway to arrest the murderers, said the police official.