A barricade collapsed during Seattle’s Bumbershoot Music Festival on Saturday, causing injuries to four attendees, the Seattle Fire Department said in a statement.

EDM musician Jai Wolf was reportedly performing on the Fischer Stage when a barricade collapsed on the crowd.

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After the fall, 25 people were evaluated and four were taken to the Harborview Medical Center in stable condition, the fire department said according to Channel 3000.

“Saturday night at Bumbershoot Festival there was steel barricade failure that resulted in several non-life threatening injuries,” festival organizers said in a statement on Saturday night. “Those injured were (handled) by on-site medical teams and further treatment continued at an area hospital as deemed necessary. We are monitoring the situation and will update as we get more information.”

On Sunday, festival organizers updated fans, noting that a new barricade has been installed and inspected at the Fisher Green Stage and Wolf will perform once again at the Memorial Stadium.

The festival, which has been held in the city since 1971, runs for three days. This year’s event, which was held from August 30 to September 1 at the Seattle Center, also featured artists like Tyler, The Creator, H.E.R., The Lumineers, Carly Rae Jepsen, and Taking Back Sunday.  Wolf’s set was rescheduled to Sunday, September 1.