Nine drug addicts were shot to death in an overnight shooting in a non-residential area in the western side of Kabul, Afghanistan, the capital police said on Sunday.

“The shooting occurred at side of Qurugh Mountain in Police District 6 roughly at 8:00 pm on Saturday. Personnel of Kabul Criminal Investigation Police Department shifted the bodies to Forensic Science Service Department near Kabul University shortly after the shooting was reported,” Ferdaus Faramarz from Kabul police told Xinhua.

One arrest was made after the shooting and the motive behind the incident remained unclear.

Further investigation is on, police added.