Josh Duggar has returned to Arkansas and was reunited with his family as he celebrated his son's birthday on Monday.

The disgraced 19 Kids and Counting reality star's son Michael turned four-years-old, and celebrated with cupcakes and family as seen on a video posted to his mother Anna's Instagram.

Grandparents Jim Bob and Michelle also shared photos of the birthday boy, but Josh was not included in any of the pictures.

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Birthday boy: The Duggar family celebrated the birthday of Michael Monday (above), the son of Josh Duggar

Big day: Jim Bob and Michelle posted multiple photos of Michael, including one of the three of them together at his party (above)

No show: Josh Duggar (above with wife Anna) was not seen in any of the photos that were posted

He's back: Josh Duggar also posted on social media Monday night (above) for his son's birthday

'So glad to be in Arkansas celebrating Michael's 4th birthday - we love you Mikey!' wrote Anna on Instagram, sharing a photo of her son blowing out the candles on his birthday cupcakes alongside siblings Mackynzie and Marcus and a few of his aunts and uncles.

Jim Bob and Michelle meanwhile posted individual shots of Michael from over the years and then one of the three of them together on the Duggar Twitter account with a sign that read 'Happy 4th Birthday Michael! We love you!'

The shot also shows a large sign taped to one of the cabinets in the home that reads; 'Circumstances don't dictate your character, they reveal it!!'

Anna's video on Instagram and the Duggar family's post on their Twitter are the first times they have been on social media since it was revealed that Josh had molested five minors when he was a teenager, including some of his siblings.

It is not known if two of his victims, sisters Jill and Jessa, were at Michael's birthday celebration as they did not post any photos from the day.

The party at the family home comes just one week after it was revealed that police were called to the residence when there was fear over the safety of a child in the home.

Audio of the 911 call on May 27, obtained by InTouch, reveals a human services team had reason to believe there was a welfare emergency concerning one of the family's 19 children at home in Washington County, Arkansas.

But according to the representative, they were refused entry and felt the need to call police.

'I'm at the Duggar family home... We have an investigation and I guess they're not being cooperative,' the worker told a 911 operator.

'We have to see the child to make sure the child is alright. We need police assistance or an escort.'

Happy times: The couple posted more images of the youngster with his older sister Mackynzie (right) and his uncle Justin (left)

Dynamic duo: The grandparents also posted this shot of Michael with his younger brother Marcus, aged two

It came just days after members of the family opened up about the scandal, including Duggar children Jill and Jessa.

Jill, who was 12 when the inappropriate touching took place, recalled feeling ‘sad' and ‘shocked’ at the revelation Josh had violated her and her sister.

‘This is my older brother whom I love, a lot,’ she remembered feeling.

The two sisters largely downplayed what went on between themselves and their older brother, calling the inappropriate touching ‘subtle’ and 'mild.'

‘It wasn’t like a horror story or this terrible thing,’ Jessa insisted in the interview, as both siblings stressed that the two of them and the rest of their family, including Josh, had dealt with the trauma and put it behind them a long time ago.

Jessa claimed that she know 'so many girls who go through things way worse'.

The 22-year-old mother-to-be told the Fox News host: 'I do want to speak up in his defense against people who are calling him a child molester or a pedophile or a rapist, some people are saying.

'I'm like, that is so overboard and a lie, really. I mean, people get mad at me for saying that but I am like, I can say this, you know? I was one of the victims.'

The girls did not entirely excuse their brother's actions, however, though even when they did point out a negative behavior the pair seemed too quickly find a way to explain or justify his actions.

'Josh was a boy, a young boy in puberty and a little too curious about girls,' explained Jessa.

'And that got him into some trouble. And he made some bad choices, but, really, the extent of it was mild – inappropriate touching on fully clothed victims, most of it while [the] girls were sleeping. '

Victims: Duggar girls Jessa and Jill (above) spoke about being molested by Josh in an interview with FOX News

After Josh Duggar, then 14, confessed the truth about fondling his sisters in their sleep to his parents, he went and asked Jill and Jessa individually for forgiveness.

The young women said they had a choice to make, and they chose to forgive him, but it took some time for them to rebuild the trust – time that Josh Duggar spent away from the rest of the clan at the command of his parents.

‘He knew in his mind his actions were wrong,’ Jessa Duggar said of her brother.

The sisters said when Josh Duggar was finally allowed to return home, he was a changed person who appeared both humbled and repentant.

‘Josh destroyed that trust in the beginning, and he had to rebuild it,’ said Jill.