Justin Bieber was seemingly booed during an acceptance speech at last night's (May 19) Billboard Music Awards.

As previously reported, the singer won three awards at the Las Vegas ceremony - Top Male Artist, Top Social Artist and Milestone.

When he collected the latter gong, he asked for people to concentrate on his music and not the other "bullsh*t". The 'Believe' star said:

"I'm 19 years old. I think I'm doing a pretty good job. From my heart, I really just want to say, it should really be about the music, it should be about the craft that I'm making. This is not a gimmick. I'm an artist, and I should be taken seriously, and all this other bullsh*t should not be spoken of."

However, it appears that the singer was booed by some sections of the crowd as he asked to be taken seriously.

Bieber seemed largely nonplussed after the event, tweeting: "Grateful to my #Beliebers. Our awards. Love u. I love music, my fans, my family, my friends..And I love The Lord."