Holmes said in a statement, issued to 20/20: 'I regret having upset Leah in the past and wish her only the best in the future.'

Leah Remini recently revealed how she was once disciplined by Scientology officials for joking around with Tom Cruise and Katie Holmes

Three years after quitting Scientology and breaking up with Tom Cruise, Katie Holmes has reached out to fellow ex-church member Leah Remini.

ABC is set to air an interview with Remini on 20/20 Friday night, and while Katie Holmes declined to be interviewed for the program, she did issue a statement apologizing for the way she treated Remini while the two were both members of Scientology.

'I regret having upset Leah in the past and wish her only the best in the future,' Holmes said in the statement.

The statement comes after Remini revealed how she was once 'written up' by high-ranking church members for joking around with Holmes and Cruise.

Katie Holmes said in a statement that she regrets upsetting Leah Remini when they were both in the church of Scientology. Holmes pictured above with ex-husband Tom Cruise

Leah Remini says that she was once reprimanded by Scientology officials for making a joke about Tom Cruise

Remini says the incident happened when she was invited over to Cruise's home to teach him and Holmes how to salsa dance, along with two Scientology officials.

'He was like, forcibly kissing Katie, And I said, "Hey, get a freaking room." And uh, well, I was written up for that,' Remini said.

These so-called 'knowledge reports' are common in the church and when a member receives one, they are required to speak about the issue during an auditing session - a pseudo-psychotherapy that Scientologists regularly participate in.

He was like, forcibly kissing Katie. And I said, 'Hey, get a freaking room.' And...I was written up for that.

Remini says members write knowledge reports each other all the time and admits to having written her husband up 'all the time'.

The former King of Queens actress quit Scientology in 2013, when she became suspicious of leader David Miscavige. She recently wrote a tell-all about her three decades in the church.

Holmes left the church just a year before Remini, when she field for divorce from Tom Cruise - the most prominent Scientologist.

During their breakup, it was revealed that Katie filed for divorce in order to protect their daughter Suri from Scientology, according to depositions made in court.

Holmes has primary custody of Suri and lives in New York, across the country from her ex-husband in Los Angeles.

In a previous trailer for her upcoming interview, Remini explained how criticizing Tom Cruise (pictured on the set of the new Jack Reacher movie on Thursday) is like criticizing Scientology as a whole

After the divorce, Holmes became the primary parent to their daughter Suri. The mother and daughter live in New York. Pictured above in August

In a previous trailer for her upcoming interview, Remini explained how important Cruise is to the religion.

Speaking out: Daily Mail Online has learned that Remini anticipates even more blow back from her expose of the corrupt inner workings of the covert organization in her explosive memoir

'Being critical of Tom Cruise is being critical of Scientology itself…you are evil,' she said.

During the special, Remini will also talk about her childhood in the church and the difficult decision to leave.

'I feel that people need to understand this has been my whole life,' Remini tells 20/20, 'I want them to understand how it happens.'

The former King of Queens actress is one of the most famous celebrities to leave the church, but unlike a lot of Hollywood Scientologists, Remini didn't join the church as adult.

Instead, Remini was brought into the church at just nine years old by her mother, school teacher Vicki Marshall, and she therefore has a unique view on what it's like to be a child in the church.

In a preview of her 20/20 interview, set to air in full on Friday, Remini explained how children are considered almost superior to adults in the church, and how that special treatment can lead them to become self-centered.

'Because Scientologists view children as spiritual beings, you're given a lot of responsibility and your ego becomes extremely inflated,' Remini said.

Remini says the decision to leave came after having her daughter, and realizing that the church could one day alienate them.

'I didn't want to raise my daughter in the church because from what I experienced and what I saw, the church becomes everything, your mother, your father, your everything. You are dependent on the church.

Like mother, like daughter: Leah Remini (bottom right) says she joined the church of Scientology at nine years old, after her mother, schoolteacher Vicki Marshall (top right) became a member

Remini and her mother Vicki Marshall, pictured together above, left Scientology together

'In 10 years, if I didn't want to be connected to the church anymore, my own daughter [Sophia] would be taught to disconnect from me. I didn't want to create that. I didn't think that would be healthy for her.'

The church also demands a minimum of three and a half hours commitment every day, seven days a week, she says. There's very little time left for your family.

Since leaving the church in 2013, Remini has become an outspoken critic of the religion, and much of her new autobiography, Troublemaker: Surviving Hollywood and Scientology, is dedicated to her years in the church.

Her mother also left the church, and in an appearance on Ellen, Remini said that the two had become closer and stronger because of it.

'I think now that we're gone, we're learning new ways to reconnect with each other. It really has brought us closer together, don't you think?' she said to her mother, who appeared in the crowd at the appearance.

Remini says the decision to leave came after having her daughter, and realizing that the church could one day alienate them. Pictured above with her husband and daughter

While Scientologists are taught to cut ties with family members who leave the church, Remini said in an interview with Buzzfeed that her mother was supportive.

'The fact my mother stood by me after all her years in the church totally took away any resentment I may have been harboring,' Remini told Buzzfeed. 'When it mattered the most, my mother was there for me.'

Remini fears more nightmarish repercussions of severing her ties with the church of Scientology and says she may be about to be in the cross-hairs again.

The book is to be published by Ballantine Books in November.

Scientology's ruthless indoctrination, she claims. includes blackmail and abuse as well as control over other celebrities like Tom Cruise and Kirstie Alley.

In a previous trailer for her upcoming interview, Remini said: 'Being critical of Tom Cruise is being critical of Scientology itself…you are evil.'

It was a difficult decision to make after 30 years as a devout Scientologist, but she says she was willing to face the church blacklisting her in order to escape it – thanks to the help of her close friend, Jennifer Lopez.

Friends no more: Will John Travolta and his wife Kelly Preston still show the love for Leah after her book comes out? The eight ball says 'Don't count on it'

Stars: Tom Cruise, Kelly Preston, John Travolta and Kirstie Alley listen to actress Jenna Elfman speak at a Church of Scientology event

'When you leave, you can leave quietly,' Leah said. 'But If you make a stink in the public world, they call you a Suppressive Person, which means the church has put a stamp on you that says you are bad.

'No one is going to tell me how I need to think, no one is going to tell me who I can, and cannot talk to', Remini told People magazine in 2013 when she left the church.

Leah's mother, husband Angelo Pagan and daughter, Sophia were all practicing Scientologists.

'I'm not about to shut up. We stand united, my family and I, and I think that says a lot about who we are and what we're about.

'We didn't have a choice and there are pretty hard repercussions to leave it', Remini stated in a video clip from her own TLC reality series, Leah Remini: It's All Relative.

Remini labels herself a 'troublemaker' in this hotly anticipated take down of the church and its hierarchy, in what is also an expose of its most famous members that include Tom Cruise, John Travolta and Kirstie Alley.

Kirstie no longer is speaking to her.

When Remini finally walked away, she was branded a 'suppressive person' in church terminology and willingly faced Scientology's attempt to destroy her life.

'As time goes on, you start to lose touch with the real world. The mindset becomes 'Us against them,' she says during the ABC interview.

'The decision to leave is you are giving up everything you have ever known and everything you have worked for your whole life.'

But Remini, who was brought into the church as a child by her mother, viewed it as destroy or be destroyed.

The actress has attempted to raise her profile following the break with the church by appearing on Dancing with the Stars and with her own TLC reality show, It's All Relative.

She anticipated the onslaught of negative publicity from the church and it came.

Desperate to hold onto her family and friends, she realized she had to make a clean break because the church was taking over her life.

Her family and friends were instructed to disconnect from her forever because she had now become a 'Suppressive Person' in their vernacular. She wasn't leaving quietly.

Worried: Remini became disturbed about the whereabouts of Shelly Miscavige, the wife of David Miscavige, the head of the Church of Scientology. She filed a missing persons report but the LAPD called it 'unfounded'

The pressure by the church was intense but she had no choice if she didn't want to lose her daughter to Scientology.

That wasn't an option.

'I'd seen a lot of crazy s**t, like crazy s**t. Like it really goes back to when I was seven years old', Remini said on It's All Relative.

Actress Kirstie, a Scientologist since 1979, bizarrely called Remini 'repulsive' and 'a bigot', going after her in an interview on Howard Stern's Sirius XM radio show.

Alley told Stern that she had now reached the OT-7 level in the church, 'an awareness level', 'less insanity'. But that so-called new awareness didn't reflect in her critical attack of Remini who had helped raise a lot of money for the church.

In the past years, Remini has been disturbed about the whereabouts of Shelly Miscavige, the wife of David Miscavige, the head of the Church of Scientology, who has been seen only once since 2006. Remini filed a missing persons report but the LAPD called it 'unfounded'.

Remini had confronted Miscavige in 2005 at the lavish wedding of Tom Cruise and Katie Holmes at the Odescalchi Castle on the shores of Lake Bracciano, Italy, just outside Rome.

Afterward, back in the States, Remini says she was was subjected to what is called 'Security Checking', months of interrogations and behavior modification at Scientology's Flag Land Base in Clearwater, Florida.

The interrogations continued until the actress agreed to drop the complaint, she says.

The treatment was brutal and Remini says she was billed $300,000.