Boy band member Sunny U4 has died, says close friend

The photo of Sunny U4 posted by Nick U4, whose real name is Naphat Ausawachanon, on his Facebook account while announcing the death of the boy band singer

Sunny, a member of boy band U4, has died, a close friend said on Monday.

Naphat Ausawachanon,  a fellow band member known as Nick U4, posted a short Facebook message announcing the death of Sunny at a condominium. The cause of the death was still unknown, he wrote initially.