He then commands his bodyguard Onesmus to find the thief and return his precious possession.
"Onesmus ensure that hat is found. It has so many matching outfits," Diamond demands of his team.
In a subsequent video, a man emerges to hand over the hat to the singer as he describes what an easy task it was to find the thief.
Diamond was visiting the Airtel shop in Dodoma before heading for a party. The green hat is from the US Boston Celtics basketball team.
Fans are now mocking the singer for being so obsessed with a hat. There are pictures of it being shared online with curious netizens asking how much it costs for the singer to be so hurt that a fan stole it.
Watch the video below;
Jalas Junior’s Appeal to Jalang’o Takes Interesting Turn