The teenager was with her boyfriend and adopted brother Nick Gordon at the time of the incident. The official minimum age for indulging in gambling is 21 years, reported Femalefirst.
The video footage of the MGM Grand resort apparently shows Bobbi enjoying a game on slot machines. Investigations by the resort and by Nevada Gaming Commission has been initiated.
Bobbi was in the Sin city to attend the Billboard Music Awards where she thanked people for their support during the hard times her family went through and paid homage to her mother who died in February.