The Inspector-General of Police, Ibrahim Idris, has cautioned Commissioners of Police against indiscriminate approval of vigilance groups in their Commands.
Idris gave the warning at the monthly meeting with commissioners of police and above on Thursday in Abuja.
The police boss said that before a vigilance group could be established, the state Assembly must enact a law which would be assented to by the governor.
He said that some police officers had connived with some state governments to arm militia groups under several names.
He reminded the commissioners that they had no right to give approval for any individual to own pistol and Ak 47 that are in the class of prohibited firearms.
Idris also urged them not to relent in their efforts to provide adequate security in their various commands especially as the 2019 general elections drew nearer.