Detectives tracked him on CCTV through town to his friend’s flat, where he was arrested later that day on suspicion of attempted murder.
Patrice died in hospital the following day, having suffered a fatal stab wound to the abdomen, and Kamau was re-arrested for murder while in police custody.
CCTV from inside the block of flats also captured him disposing of an orange carrier bag down the communal rubbish chute shortly before his arrest.
The bag was recovered by officers and found to contain a knife, which forensic tests confirmed was the weapon used in the fatal attack.
