The technology business is buzzing with the 2014 International Consumer Electronics Show (CES) in Las Vegas, and T-Mobile CEO John Legere is making a splash for all the wrong reasons. The T-Mobile CEO "crashed" a party held by rival AT&T.

Despite an attempt to merge the two mobile carriers in 2011, AT&T and T-Mobile's relationship has reportedly been "testy," as The Washington Post noted. Relationships might have soured a bit more following a new report of Legere attending an AT&T event whilst wearing a traditional pink T-Mobile shirt.

CNET's Robert Cheng has been receiving credit for Legere's removal from the AT&T party, which featured a performance by Macklemore and Ryan Lewis. Legere stopped to pose for a picture with Cheng, which the CNET reporter posted on Twitter.

Cheng's tweet read, "Ran into @JohnLegere at the AT&T party. Yep, he crashed it. And still wearing the pink t-mo shirt. #CES2014."

Approximately 15 minutes later, AT&T might have noticed Cheng's tweet as Legere was escorted out of the AT&T party.

Cheng's corresponding tweet stated, "Oh wow, security just escorted @JohnLegere out of the party. AT&T is not happy with my tweet. #ces2014."

Legere, however, was able to attend the party legally as Macklemore's agent reportedly gave passes to the T-Mobile CEO and his guests.

"To say that this is competition getting extremely fierce would be an understatement," reported Cheng. "Around that time, AT&T's own mobility CEO, Ralph de la Vega, announced that his company had won the rights to provide LTE connection to Audi, snatching away a cellular contract previously struck with T-Mobile."

Ran into @JohnLegere at the AT&T party. Yep, he crashed it. And still wearing the pink t-mo shirt. #CES2014 pic.twitter.com/gy9vGTJUEW

— Roger Cheng (@RogerWCheng) January 7, 2014

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