Leah Remini was brought to tears after hearing Katie Holmes' apology read out loud to her during her 20/20 interview with ABC News on Monday about Scientology.

Remini, who left the "extremist religion" in 2013, also did not hold back when she revealed shocking details about the religion ahead of the release of her book "Troublemaker: Surviving Hollywood and Scientology."

Remini tried to hold back her tears when ABC News anchor Amy Robach read a statement from Holmes sent to ABC on Oct. 30. In the statement, the actress expressed her apology for having upset Remini during those times they were both still members of the Scientology church. The 45-year-old got emotional when Robach read Holmes' statement of apology for their previous fights.

"I regret having upset Leah in the past and wish her only the best in the future," Holmes statement read. Holmes was also a former member of Scientology during her previous marriage with actor Tom Cruise.

Remini explained her emotional reaction to Holme's statement. She told Robach that it's because she has finally come to understand why she and the actress were in disagreement before when it came to the teachings of Scientology.

"At the time I was fighting with her -- I guess for the lack of a better word -- within the Church and now I know really what she was going through because at the time I was thinking of myself and my family and what we were going through. I had no idea she was going through probably a lot more," Remini said in her interview with ABC News.

According to MailOnline, in the same interview the 45-year-old expressed her understanding of Holme's decision to leave the church. Remini said the actress was only trying to protect her and Tom's daughter Suri from having to choose between her mother and Scientology.

"I know now she did what she did because she had to protect her daughter, which in a way connects us," Remini said of the actress' decision, adding that she too left Scientology since she didn't want her daughter Sofia to choose the church.

Remini may have received numerous complaints or "knowledge reports" from church members over her revelations during her ABC News interview. But her husband Angelo Pagan was more than happy and relieved that the church's shocking practices are finally out in the open. He took to his Twitter to express his support for his wife through a series of posts.