Does Chris Mortensen smell a rat?

The ESPN reporter’s curious Twitter activity Monday fueled a storm of speculation online after he tweeted out a series of rat emojis on three separate occasions.

Eagle-eyed fans took notice of a pattern, specifically Zach Schwartz of Yahoo Sports, who first spotted the rat emojis in the afternoon when ESPN’s Adam Schefter reported news of Jaguars cornerback Jalen Ramsey’s trade request. Moments after Schefter’s initial tweet, NFL Network’s Ian Rapoport posted similar news. The animal-inspired message from Mortensen soon followed.

Later in the day, Schefter reported Dolphins defensive back Minkah Fitzpatrick had been traded to the Steelers. Rapoport followed with identical news a minute later. Mortensen then posted a tweet featuring two rat emojis at the 7:14 p.m. mark.

During the Browns’ 23-3 rout over the Jets on Monday evening, Schefter stated that quarterback Trevor Siemian would undergo an MRI exam on his ankle after he sustained an injury in the game while Rapoport reported the news shortly after. Mortensen later followed up with three rat emojis.

Though it remains unclear as to what and/or whom Mortensen may have been referring to, his colleague Mina Kimes playfully responded with three emojis of squirrels.

ESPN declined comment.