Big Cass was set to appear on the second half of tonight's House of Hardcore, but during intermission he started having a seizure and fell to the floor in the lobby. House of Hardcore is taking place at the 2300 Arena in Philadelphia, Pennsylvania.

 PWInsider reports an ambulance was called and EMTs tended to him. Tommy Dreamer also came to the ring and asked fans to say a prayer for Big Cass. He also noted Cass suffered a seizure and wanted to make a point it wasn't "drug-related." Dreamer said he was with Cass "all day."

@JeffLane22 @THEVinceRusso @davemeltzerWON

Walking back from the bathroom, Big Cass had a seizure right in front of me. pic.twitter.com/POcxSEYPSS

, Carrie Jean (@CarrieJ91549774) December 9, 2018

Scary moment going down at the #HouseofHardcore event in Philly right now as former WWE Star Big Cass collapses in the lobby. Doctor attending to him now.

, David Onda (@David_Onda) December 9, 2018

Tommy Dreamer and Bubba Ray Dudley are by his side. He looks responsive. Scary stuff.

, David Onda (@David_Onda) December 9, 2018

He’s awake, eyes open, looks to be communicating. I’m staying far back to give everyone room, but it’s a positive sign. Send your good vibes to Cass.

, David Onda (@David_Onda) December 9, 2018

That was scary. It was intermission at the show, the lobby was packed with people checking out the merch tables. Cass went right down into his face. Fans immediately stepped back to give him room. Doc was called. Kind of chaotic. Dreamer was right by his side.

, David Onda (@David_Onda) December 9, 2018