Do the 'thieves' have weapons? because if they've got guns and the left mouse buttons required to use those guns then theft is going to be fairly low down their list of charges for their team to named after that offence - this sounds like a bad half life mod. Either way this one is getting a wide birth after BF4, I'll give it a could month or so for various analysis of the netcode delivers a verdict.
sounds like that mod for arma3 but without civilians and just cops vs rebels
http://www.rockpapershotgun.com/2014/03/11/cops-and-robbers-arma-3-altis-life-mod/