The Police have been congratulated by a criminal for arresting him so quickly in Guinea. In a viral video, Boubacar Diallo felicitated with the police while being interviewed after he was arrested.

He and his accomplice freely admitted to stealing the sum of 50million Guinean francs (N2million) from a phone shop in the north-western city.

Diallo said, “The national police head office should be congratulated. I also want to say that the police need equipment because it has well-trained officers. Serious.” According to him,he did not for a moment imagine the would be caught so quickly.

Diallo said he regretted his crime and would never go back to it again.
http://www.xquisite360.com/2017/09/thief-congratulates-police-for.html?m=1

If there is any adjectival phrase like 'rational thief', then it describes this fellow.