In the message, the general directorate wanted the police departments to increase efforts to capture the suspects.
The message also urged citizens to inform authorities of suspicious situations.
The report came just hours after two percussion bombs exploded in central
Percussion bombs typically make a loud noise but rarely cause serious damage. No claim of responsibility was reported for the bombings.
The attacks came one day after police raided the hideout of a left-wing militant organization, killing a senior member. One police officer and a civilian died in that raid.
Photo is an archive image.