MERRICK - A so-called flash mob made up of more than 100 people broke into a dance routine Saturday to benefit an Oceanside teen battling cancer.

The group from Synergy Fitness Club performed at the Merrick Street Fair for Kevin Artus, who was diagnosed with non-Hodgkin's lymphoma last month.

He is going through chemotherapy, but his mother was there to witness the dance. She said she was overwhelmed by the support.

"The most amazing feeling in the world to know so many people took time out of their lives to support my son…People are incredible," said Kelly Artus.

A GoFundMe page was created to help in Kevin's fight against cancer.