The Maroon 5 frontman was greeting fans outside the Jimmy Kimmel Live studios when a prankster ran up to him and threw a bag of powdered sweetener all over the singer.

Angry Levine was ushered into the studio, where he cleaned up in time for his appearance on the late-night show.

The attacker was apprehended by security staff and later arrested by police for battery.

It is not clear why he attacked the singer.