(Cover) - EN Showbiz - The cast of Glee broke down in tears while shooting final scenes for season three.

The stars from the popular US TV show have found it emotional while working on the latest episodes. Many of the characters are in their final year at high school and will be going on to college or full-time jobs.

Harry Shum Jr., who plays talented dancer Mike in the show, has revealed that the prospect of graduation has taken its toll.

"There [are] a lot of tears on set, randomly. We had a rehearsal and even our choreographer had some tears," he told ET. "He couldn't even get through the rehearsal...We've been through a long journey."

Jenna Ushkowitz portrays Tina and added that the cast and crew are dealing with mixed emotions. There is a level of uncertainty about what will happen to some of the characters next season.

"It's probably going to be some sort of a different show," she explained.

Lea Michele also revealed that she and her co-stars have no idea about how this season will end.

Her character Rachel is engaged to fellow student Finn, but she isn't sure if a wedding will be happening just yet.

"The last couple of pages in the finale script were not handed out to the cast so it's a big secret and I'm assuming we're going to find out on the day or something like that. They're trying to keep it totally, totally top-secret," she added. (C) Cover Media