Authorities say four men were wounded when a rapper’s van came under fire on a St. Louis highway after a concert.

The St. Louis Post-Dispatch reports that 19-year-old Osiris Williams, a Florida rapper and singer who goes by YK Osiris, was in town to open a sold-out Lil Baby concert at the Pageant.

Police and social media posts from Williams say that someone shot at the act’s white Sprinter van just after 11 p.m. Wednesday. The victims are stable after suffering wounds to their limbs.

It wasn’t clear if Williams was among those injured or if he was in the vehicle during the shooting. No suspects have been identified.

A video of Williams’ song “Valentine” has more than 19 million views on YouTube since it was published in March.