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An ammonia leak from a tanker truck parked behind a Holiday Inn in Oklahoma sent nearly 40 people to the hospital, and around 1,000 were evacuated

A shelter-in-place order was lifted after the air quality improved, authorities said

Weatherford Police Chief Angel Orefice said it is uncertain if the truck was in an accident prior to the leak

Dozens of people were hospitalized, and several are in critical condition, after a truck leaked ammonia gas from a hotel parking lot in Oklahoma.

The incident occurred on the evening of Wednesday, Nov. 12, in Weatherford, after the toxic gas leaked from the tanker truck parked in a Holiday Inn parking lot, according to The New York Times , CNN , CBS affiliate KWTV and ABC affiliate KOCO .

According to KOCO, 36 people were hos

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