(AllHipHop News) Young Buck could be headed back to prison. The G-Unit rapper is being accused of attempting to cheat on a drug test. According to TMZ, Buck’s probation officer believes the Nashville native used someone else’s urine.

[ALSO READ: Young Buck May Be Headed Back To Prison Over Marijuana?]

The P.O. accuses Buck of concealing a plastic bag with clean pee and then using a tube to transfer it into a sample cup. Buck is currently on probation. If the offense turns out to be true, the “Shorty Wanna Ride” rhymer could face up to five years of incarceration.

Buck previously served an 18-month sentence on weapons charges and was released in 2013. He reunited with 50 Cent and G-Unit the next year. Meanwhile, Buck is posting Instagram videos of his time in the studio and also offering features and show appearances.

#Mood…..STILL GOING!!! FOR #Features AND AVAILABLE #Showdates EMAIL bookingbuck@gmail.com ASAP???!! #GunitSouth #DopeBoyUniversity

A video posted by Young Buck (@buckshotz) on Aug 24, 2015 at 3:46am PDT