Jim Tomsula doesn't believe the sources of negative stories about the San Francisco 49ers are coming from inside the team.

“Look, if they’re not in the room when we close the door with 53 [players] and the coaching staff, they really don’t have our best interest at hand,” Tomsula said Wednesday morning. “If you’re not in here with us, if you’re not in the building with us, if you’re not working here with the 49ers, anything outside of that doesn’t have the same interest ... that we do.

“We’re intimate with what we’ve got to do if you’re employed by the San Francisco 49ers.”

Kaepernick has received criticism for being ostracized from the team.

“I’ve been here the whole time he’s been here and it seems like this has been what’s gone on with him since I’ve been here,” Tomsula said of Kaepernick. “It’s always, there’s always something. So I guess that’s what goes on when you’re the quarterback of the San Francisco 49ers.

“I was here with Alex [Smith] and I saw the same thing going on there; there were all kind of reports and you heard about that stuff all the time.”

Leaks last year created a narrative to undermine Jim Harbaugh.

“That would be an absolute concern, but I don’t address those things [because] I don’t know where they come from,” Tomsula said. “There’s stuff that comes all over the place that I don’t know where people are getting their stuff. I don’t believe it’s coming from here. I don’t believe that … from the locker room.”