BART said Monday that it received multiple calls about a man on a train with two chainsaws and responded within minutes as the man exited at an Oakland station.

The transit agency made the comments in a series of tweets to a woman who posted a video showing a man with two chainsaws on a moving BART train on Monday afternoon. At one point, as he appears to try to start the first of the two devices, he can be heard saying — apparently to himself — something that includes: “cut your frickin’ head off.”