Why did Marv tell Bob that Deeds killed Whelan?

Why did Marv tell Bob that Deeds killed Whelan? - Ethnic girl sitting on sofa close to smiling best friend and whispering secrets on ear

In one conversation in The Drop, Marv tells Bob that Deeds was the one who killed Whelan. Isn't this strange, given that as I understand it, Bob killed Whelan based on Marv's order? Or am I wrong?

Why would Marv tell him something like that if that was the case?






Pictures about "Why did Marv tell Bob that Deeds killed Whelan?"

Why did Marv tell Bob that Deeds killed Whelan? - Positive married couple relaxing on threshold of house
Why did Marv tell Bob that Deeds killed Whelan? - Positive Indian spouses in casual outfits sharing interesting stories while drinking morning coffee on doorstep of house
Why did Marv tell Bob that Deeds killed Whelan? - Black and White Portrait of Young Woman Looking over Shoulder 





The Drop scene - Marv warns Eric Deeds about Bob




Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Eren Li, Ketut Subiyanto, Ketut Subiyanto, Анастасия