Pharmaceutical entrepreneur Martin Shkreli was suspended from Twitter on Sunday over the harassment of a female journalist.

In recent days, Shkreli launched a trolling campaign against freelance reporter Lauren Duca, saying he has “a crush” on her. Among other things, Shkreli asked her to be his date to Donald Trump’s presidential inauguration, digitally manipulated an image of Duca and her husband so she appears to be snuggling on a couch with Shkreli, and posted a collage of images of her. Some of Shkreli’s 192,000 Twitter followers joined the photo-posting fray against Duca.