Warning: The photos in this story could be considered graphic.

WASHINGTON D.C. --- The president of Washington State University’s College Republicans group was attacked last night outside an inaugural event in Washington D.C.

According to a police report, an officer saw a suspect hit WSU student James Allsup in the back of his head with his fist before the “DeploraBall,” an event at the National Press Club Building in Washington D.C. Thursday night.

Protesters had been outside, according to multiple media reports, ahead of the event.

Allsup said he was hit by one protester and his hat was stolen. Allsup said 30 minutes later, he was hit in the back of the head with a flag pole by a white male wearing a mask.

“The bleeding was fairly severe and I had to go to the hospital and received five staples to mend it,” Allsup said.

In a recount of the event, Allsup said " As we were going to leave, we were walking through the crowd as a group of four. We were walking away from the crowd and heard yells of "die Nazi die" behind us. I turned to keep walking faster and then things went black and my ears were ringing."

Allsup was featured in a FOX News article after the incident.

“I’m all for disagreeing, I debate people all the time and I want to engage in these discussions, but they’re throwing bottles,” Allsup told Foxnews.com. “I would be livid if people who supported Trump were doing this to Hillary supporters.”

Allsup said he had to wait 30 minutes for an ambulance to arrive due to the amount of protesters blocking the roads. Once at the hospital, he received five staples in his head to fix the injury.

Allsup posted the photos of his injuries online, which were trending in some circles by Friday evening.

Washington D.C. police said one suspect had been arrested in the case and charged with simple assault.

Allsup posted a video on Youtube showing more of the event.