A police source was stabbed to death by drug dealers during a drive-in Bandabazar area of Khulna city on Tuesday night.
The deceased was identified as Shafiqul Islam, 35, the source of Detective Branch of Khulna Police.
Confirming the matter, Officer-in-charge (OC) of Labanchara Police Station, said that on secret information a team of DB police along with three sources conducted the drive in Bandabazar Bahadur Lane area to arrest a Yaba trader gang around 11:30pm.
Sensing their presence, the gang members attacked them with knives, leaving one assistant sub-inspector and two sources critically injured.
Being rescued, they were rushed to Khulna Medical College Hospital where doctors pronounced Shafiqul dead.
The OC said that police are investigating the incident.