The custody battle continues between Robin Thicke and Paula Patton.

Over the weekend, the former couple attended their first joint therapy session with their 6-year-old son Julian, E! News reports.

It’s been a bitter series of events for the former couple.

One day after an L.A. judge rejected Patton‘s request to limit her ex-husband’s joint custody of their son, law enforcement officials were dispatched to Patton’s Calabasas home after Julian didn’t arrive at school. Reportedly, the incident was “a non-event” but “it involved a child not wanting to go with someone.”

Patton texted Thicke to say she was picking up their son on Jan. 5, despite it being Thicke’s custodial time. “Paula sent someone to school to intercept Julian, in violation of the custody orders,” Thicke’s lawyer Angela Pierce di Donato said, adding that “she did not return him to school today.”

Thicke’s lawyer continued, “Julian only shows any evidence of emotional harm when questioned by Paula or in her presence.”

But another source said, “Julian has made it clear he does not feel safe in his father’s presence, a fact confirmed today by the Malibu Sheriff’s Department determination — with Mr. Thicke present — that the child needed to remain with his mother.”

In legal documents filed Jan. 12, Patton accused Thicke of physically abusing Julian.

In these documents — which include statements from each parent, Julian’s nanny, school principal and counselor — Patton said she’s “become concerned about [Robin]’s drinking and drug use, as well as the forms of punishment he is using to discipline Julian.”

As well, Patton is concerned about Thicke spanking their son, which became too hard and made Julian “scared.”

A school counselor also said that his father “punches him so hard, but never where someone can see.” But according to Thicke’s lawyer, “The school improperly allowed Paula to sit in the room while Julian was questioned. He was described as crying, hyperventilating and clinging to his mother.”

An insider close to the situation commented on the situation.

“It is well-documented in court declarations, not only by the mother, but by two school officials as well as the child’s nanny, that there are allegations of abusive behavior by Mr. Thicke,” said the source. “To be clear, it was concern by school officials, not Ms. Patton, that led DCFS to initiate their ongoing investigation into allegations of abuse by the father. Despite Mr. Thicke’s intent to smear her as a mother, Ms. Patton must do everything in her power to protect her son.”

Thicke has defended himself since the allegations.

“On a very rare occasion and only as a last resort, I will use light spanking, but it is consistent with the law — open hand on the butt. This is the type of discipline to which Paula and I agreed during our marriage,” the Blurred Lines hitmaker, 39, said in a statement.

The statement added: “It is my belief that Paula holds residual anger towards me because I and my family would not permit her or her family to attend the funeral of my father on December 20, 2016. Paula did not have a positive relationship with my father … As such, she was not welcome at his funeral. It is my belief that Paula only wanted to attend because it would have resulted in additional public exposure for her.”

And Thicke’s lawyer supports these claims.

“We believe that Paula was angry that she was excluded from Alan’s funeral last month,” Pierce di Donato said. “A week later she refused to allow Julian to open presents with Robin on Christmas morning. Days later, a referral was called into the child abuse hotline.”

Patton, 41, asked for Thicke’s time with Julian to be supervised, and not to include overnight visits, but a judge denied the requests.