ANAHEIM, Calif. – Two dry-ice bombs exploded at Disneyland, prosecutors revealed Thursday as they filed a felony criminal count against an employee who worked at a vending cart near the Toontown section of the theme park.

Christian Barnes, 22, pleaded not guilty to possession of a destructive device in a public place, and his bail was set at $500,000, said Farrah Emami, spokeswoman for the Orange County district attorney’s office.

Authorities initially reported that a dry-ice bomb had detonated Tuesday in a trash can. But a statement from the district attorney’s office announcing the criminal filing said there were two explosions.

Prosecutors allege Barnes placed dry ice in two water bottles and locked one inside the vending cart. When a co-worker came to take over the cart, Barnes opened the cart and one bottle exploded, Emami said in the statement.

Barnes then took the second bottle from the cart and walked through Toontown, placed it in a trash can and left the area, according to the statement. The bottle exploded a short time later after a janitor removed the trash bag and put it on the ground.

No one was injured in the blasts, prosecutors said.

Barnes has cooperated with investigators and told them the blast was an isolated incident with results he did not expect, said Anaheim police Sgt. Bob Dunn, who did not elaborate.