12/05/2013 05:48 pm ET Updated Feb 04, 2014

Justin Bieber Detained In Australia During Airport Drug Search

Robb Cohen/Invision/AP

Justin Bieber and his entourage were detained at the Brisbane, Australia airport while customs agents looked for drugs ... and TMZ has learned they allegedly found weed on one of Justin's pals.

The Australian Federal Police tell us ... a 19-year-old man was detained back on Nov. 24 ... but was released after getting a stern warning for using.

Read more on www.tmz.com