OAKLAND — A day after a woman fell through a skylight while joining other Hiero Day music festival attendees on rooftops, some critics have questioned lax security and other shortcomings at the event.

The condition of the unidentified 22-year-old woman, who fell through a second-story warehouse skylight, according to Oakland firefighters, was still unclear Tuesday, 24 hours after the daylong hip-hop concert. However, multiple attendees who reached out to Bay Area News Group voiced concerns that dozens of concertgoers began climbing walls to access warehouse roofs near the three stages, which were positioned along Third Street between Filbert and Market streets in West Oakland.

“Whatever security presence Hiero Day might have employed, they certainly didn’t seem to make a priority out of telling people not to sit there,” said Zack Ruskin, who was covering the event for SF Weekly. “I saw few, if any, official Hiero Day staff in a position of authority anywhere on the festival grounds.”

The music reporter has attended numerous music festivals, but he had never seen such a breakdown of services, calling it “dangerous.” Aside from the roof climbing, Ruskin said attendees could only get water by waiting in lines at beer vendors, garbage cans were overflowing, security and event organizers were not easily visible and almost every act started its set at least a half-hour late.

Ruskin said the annual event has additional challenges, being tucked into an industrial neighborhood just south of Interstate 880, not far from Jack London Square. Most large music festivals are in concert venues or outdoor parks with more space. Still, many attendees gave glowing reviews of the concert and the performers on social media.

It was around 5:20 p.m., as rap act Dilated Peoples performed on the Third Eye Stage, that the unidentified woman fell through the skylight, Oakland fire Battalion Chief Zoraida Diaz said. A man, possibly the woman’s boyfriend, broke a ground floor window in order to get to her before EMT cadets working the concert helped wheel her out on a stretcher. The man suffered cuts and was taken to a hospital, Oakland police spokeswoman Officer Johnna Watson said.

Ruskin said he first saw Oakland police as they cleared the area near the stage to allow the woman to be taken away, and he saw her motionless with a bloodied face.

“It was very scary, we didn’t know what happened to her,” Ruskin said.

Other attendees also expressed concern, saying they saw fans boosting each other up onto the roofs and dancing next to the edge of the rooftops. Social media posts showed a video of the people lining the rooftops. Dozens of people were on the building where the woman fell onto a concrete floor about 20 to 25 feet below. The roof offered views of a stage set up on Filbert Street and another on Myrtle Street.

A representative from the company that manages the building declined to comment Tuesday. The building is currently vacant and undergoing renovation. Workers could be seen Tuesday afternoon cleaning up piles of litter and garbage from the festival streets.

Representatives from the festival did not return multiple emails requesting comment.

Contact Matthias Gafni at 925-952-5026. Follow him at Twitter.com/mgafni. Contact David DeBolt at 510-208-6453. Follow him at Twitter.com/daviddebolt.