An animal hospital in Pennsylvania has been evacuated over a leaking X-ray machine.

A hazmat team responded to Twinbrook Animal Clinic, about 20 miles (32 kilometers) north of Pittsburgh, on Friday morning.

Crews say the leakage apparently filled a room with fumes and left one worker with a minor burn.

Officials told WPXI-TV that the substance isn't radioactive.

Hazmat crews are ventilating the building. No information has been released about what the substance might be.

No animals were injured.

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