Anthony Scaramucci, incoming White House communications director, said Wednesday night that he knows who is orchestrating leaks among the communications department and will take "dramatic steps" to stop them.

"I know I'm in a cesspool called Washington, or a swamp called Washington, so it will be virtually impossible to get rid of every leak, but I think we can take dramatic steps to get rid of leaks," Scaramucci told Fox News' Sean Hannity.

Scaramucci said that he's discovered senior people in the communications department who are asking "junior people to leak for them."

He said next week he will host a meeting with the 40 or so members of the communications team to address the issue of leaks.

Scaramucci also continued to hint he may fire more people from the communications department, although he says he's concerned of a "civil war" that may erupt amongst staff if he instigates a significant shake-up.

"We're going to let the people go if we have to," he said. "Unfortunately, we let somebody go yesterday. I've told people that if there's a civil war, and people are fighting internally, we have to dial that down. I don't think you can let people go per se, just for the sake of letting them go. I think you have to give people a chance, give them some level of amnesty to see if they'll stop and work together, but I will move very quickly if they cannot do that, because I have the president's authority to do so."

The full interview on Fox News will air at 10 p.m. ET.

On Tuesday, White House senior assistant press secretary Michael Short resigned from his position, after Scaramucci said he was planning to dismiss Short.

Speaking later with reporters outside the White House, Scaramucci said he was upset that his plans to fire White House staffers had been leaked to the press, starting with his intention to remove Short.

"The fact that you guys know about it before he does really upsets me as a human being and as a Roman Catholic," Scaramucci said.