After the acquittal, Carl admits to Jimmy and Matthew that he killed Tom. He reveals that he confronted Tom about Chas, hitting him when Tom called Chas names and then pushed him away, causing Tom to fall out of the window.
After being acquitted, Carl admits to Jimmy and Matthew that he committed murder by killing Tom. The confrontation was triggered by Tom's insults towards Chas, resulting in Tom falling from the window after being pushed by Carl.