Fans at a Lil Pump concert on Friday got a lot more than they bargained for.

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In the middle of the rapper’s performance Rock City in Nottingham, UK, someone tossed what appears to have been a tear gas canister into the crowd, TMZ reported.

Lil Pump was reportedly evacuated from the stage, but picked the show back up outside the auditorium performing on top of his tour bus.

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A Nottingham Police Department spokesperson told TMZ, they received the call about the incident at around 9:30 p.m. local time, and that two people were being treated for minor injuries.