FIRE officials said 20 people were taken to the hospital following a hazmat situation at a YMCA. First responders arrived at the scene in Reading, Pennsylvania around 3pm.

A hazmat incident at a YMCA resulted in 20 people being taken to the hospital

It is believed two staff members mixed two wrong chemicals together According to fire officials, 21 people in total were injured with 20 people being taken to the hospital for evaluation. Everyone is expected to recover. The Reading Fire Department announced that two YMCA staff members mixed two wrong chemicals in the first-floor pool area, leading to the emergency incident. "What we found when we got here, from the hazmat side, was a chemical reaction going on in the sub-room below the pool, where they mix the pool chemicals to keep the pool water safe for folks to swim in," said Dep Chief Tom Kemery. Most read in The US Sun FIERY CARNAGE Ellen's ex critical with 'severe burns' as horror pics show fiery car crash KIM-TENSE Kim flaunts TINY thighs in gym at $60M mansion as fans say she's 'too skinny' MAKING A RACKET Today's Savannah Guthrie show embarrassing injury bruised face live on air 'RIDICULOUS' Fans mock Kylie after they notice 'horrendous' detail about her face in TikTok DOUBLE BENEFITS Millions of SSI claimants to get two payments worth up to $1,682 next month CODE RED China 'convinced it needs to hit US with Pearl Harbor-style strike' over Taiwan Among the 20 people taken to the hospital, two of them were staff members. Over 80 people were evacuated from the YMCA, said officials. An investigation into how the chemicals were mistakenly mixed is underway by the YMCA. Firefighters used fans to clear out the chlorine gas in the building before allowing people back inside shortly before 5pm.