Edward Droste, Grizzly Bear's frontman, slammed pop superstar Taylor Swift on Twitter in a series of defamatory tweets, Sunday. As per Daily Mail, the 36-year-old singer took to social media earlier this year but then deleted a blind item about an encounter with an "insanely powerful" personality, who was "mean, rude and arrogant."

As per The Sydney Morning Herald, the since deleted tweets read:

"Met a celebrity I always speculated was terribly calculated and mean, and they exceeded all my expectations of rudeness and arrogance. HATE."

"If you know please don't @ the person, they see all and have the capacity and desire to destroy, seriously, please just know and lol [sic]," wrote Droste.

"I'm too petrified of their insane power. No need to speculate, just HAD to voice my disgust."

He confirmed on Sunday that the celebrity he was referring to was "Bad Blood" singer Taylor Swift. Droste also retweeted an article and captioned it: "Obsessed that people are catching on."

The article that was retweeted by Edward Droste was from Star Magazine, who reported that Taylor Swift "had a dress code" for her equally stunning and famous girl pals "to make sure she wasn't upstaged" in her London concert last June 27.

A source further dished to the magazine: "Gigi [Hadid] was talking trash behind Taylor's back. She got Kendall [Jenner] and Cara [Delevingne] all riled up."

"Taylor is a control freak. She's going to end up with very few friends left if she doesn't change her ways."

When his Twitter followers questioned his atrocity toward Swift , the singer answered that the "Style" hitmaker "frightens me genuinely."

Edward Droste also ridiculed Swift's humanitarian personality and said, "Her sending gifts to fans and you tubing in, so self serving #gross."

The Indie rock band singer also did not miss on Taylor Swift's recent beef with "Anaconda" hitmaker Nicki Minaj. His reaction: "I wonder how many lawyers and publicists were involved in that apology #notbuyingit," tweeted Droste when Swift apologized to Minaj for calling her out on Twitter.

"I finally feel comfortable expressing my distaste for the rudest, fakest person I've ever met #liberating."

 Entertainment Tonight detailed that Edward Droste also retweeted a rough message: "I want to just put out here that I've always known Taylor Swift was immensely evil as she is powerful." 

It's still vague when or how the two met and what really happened that left Edward Droste with such ill-feeling toward Taylor Swift.