( CNN ) -- A 9-year-old rapper 's adult-themed music videos are finding some new viewers -- Massachusetts child welfare authorities . The child , Luie Rivera Jr. , whose stage name is `` Lil Poopy , '' is seen in videos posted online , including on YouTube , smacking a woman 's backside , flashing wads of cash , riding in a Ferrari and rapping about how `` coke is not a bad word . '' A separate video shows the young performer in a nightclub with a dancing woman in a sexually suggestive position , with people in the crowd throwing cash . The Brockton , Massachusetts , police department contacted the state 's Department of Children and Families after receiving a call from a `` concerned citizen '' who saw the boy in videos featuring sexual themes and drug references . The state agency is brought in when there is suspicion of physical , mental , or emotional abuse of a child , according to Brockton police Lt. Robert Sergio . `` An investigation is now open , '' said Cayenne Isaksen , public affairs director for the state agency . Isaksen would not discuss details about the investigation , but added that non-emergency investigations typically take no longer than 15 days . Lil Poopy is a member of internationally known , Moroccan-born rapper French Montana 's group , Coke Boys . According to CNN affiliate WCVB , Luis Rivera , Lil Poopy 's father , says his son is `` not doing anything wrong , '' and that he planned on contacting his lawyer . CNN has been unable to independently reach the elder Rivera . Sergio said Monday that no court orders are in place and no criminal charges have been filed .
A Massachusetts child welfare agency says it is looking into the work of `` Lil Poopy '' The 9-year-old rapper is featured in adult-themed music videos . Police say they have received a complaint about the video and are investigating it. The child 's father tells a Boston TV station that his son is `` not doing anything wrong ''