After a report surfaced indicating that Steelers all-pro receiver Antonio Brown did not report to the facility Monday after a disappointing Week 2 defeat, head coach Mike Tomlin confirmed Brown’s absence but declined to reveal any other details.

“He was not,” Tomlin said Tuesday in a news conference when asked whether Brown was in attendance. “No, I’m looking forward to visiting with him today and discussing that and some other things. I’m not going to get into the details of why he wasn’t here or whether he was excused and all of those things. I’m just going to leave those things in house.

"I understand sometimes you’ve got some negativity. You know, we lost a football game. There were some negative exchanges on the sideline, frustrations associated with not playing well and not winning, I understand all that.”

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Tomlin was asked again later in the news conference about whether he had any indication of why Brown did not report and said he “may or may not provide details relative to some of the things that you guys are asking."

“I just want to stay focused on what’s real and what’s important,” Tomlin continued. “Our preparation and ultimately our play this week. Not only ours, collectively, but his included.”

Brown appeared to be frustrated multiple times during Sunday’s 42-37 loss against the Kansas City Chiefs that dropped Pittsburgh to 0-1-1. At one point, he was caught on camera having a heated exchange with offensive coordinator Randy Fichtner.

On Monday morning, Brown tweeted in response to a former Steelers public relations staffer who hypothesized that the receiver's prolific career has largely been the result of playing with quarterback Ben Roethlisberger and that Brown would not have impressive numbers if he played on another team. Brown responded: “Trade me let’s find out.”

“I’m not going to openly talk about a lot of things that occur on social media,” Tomlin said. “You can be chasing that always. I will say this. It’s important that we understand our position, the light that shines on us and the responsibility with it. There have been a couple of instances now where you have asked me about Antonio regarding some social media things. I’ll address that very direct with him, but I will leave that between he and I. I’m not going to utilize this forum to address those things. I just don’t believe it’s appropriate.”

Tomlin added that Brown has not asked to be traded, despite his Twitter post.

In a statement to ESPN's Adam Schefter, Brown's agent Drew Rosenhaus said the questions about his client were a "non-story that had been blown out of proportion."

"Antonio had a personal matter," Rosenhaus said. "I talked to the team about it. His issue was unrelated to the tweet or his relationship with the team."

Brown, who led the NFL with 1,533 receiving yards in 2017, is widely considered one of the best playmakers in the league. He has caught 18 passes for 160 yards and one touchdown in two games.

Brown is not the only Steelers star who has created a stir this year. All-pro running back Le’Veon Bell still has yet to sign his franchise tender and now has missed the entire offseason workout program, training camp and first two weeks of the regular season

“We’re two weeks in,” Tomlin said. “We don’t have a large body of work. We’re focused on winning this next opportunity. I’m not ready to paint with a broad brush. I’m just not.”

The Steelers travel to Tampa to face the 2-0 Buccaneers Monday night.

Follow Lorenzo Reyes on Twitter @LorenzoGReyes.