Justin Bieber's ongoing 21st birthday celebrations in Miami, Florida were disrupted by police on Friday (06Mar15) following a dispute with a group of girls which had been kicked out of his party.

The ladies had reportedly been asked to leave the Baby hitmaker's gathering in his Miami Beach Edition hotel suite on Friday, and complained to cops after the singer's security guards refused to let them back in to collect their belongings.

However, when officers arrived to escort the females to the star's room, Bieber's pals claimed the fall-out had been a misunderstanding and the girls were invited to rejoin the bash without incident, according to Tmz.com.

Bieber originally marked the age milestone on 1 March (15) by partying on a private island in the Caribbean. He is also planning a second big blow-out in Las Vegas next weekend (14Mar15).