The stream of tweets about climate change that appeared on the Badlands National Park’s Twitter account today were deleted because the account had been “compromised,” a US National Parks official tells BuzzFeed News. The official said that the tweets — which listed facts about the rise in global temperature — were the work of “a former employee who was not currently authorized to use the park’s account,” claiming that the park had not been ordered to remove the tweets by government agencies. It’s not clear who posted the tweets, but the Badlands National Park is currently in the midst of a heavy snowfall, superintendant Michael Pflaum told Quartz.