The police were called again in Paula Patton and Robin Thicke's custody war.

Paula Patton and Robin Thicke

Paula Patton and Robin Thicke

Robin is currently limited to three visits a week with his six-year-old son Julian Fuego but when Paula - who has a restraining order against her ex-husband - was supposed to hand the youngster over to a court-appointed monitor at a Malibu park on Thursday (16.02.17), she reportedly called the police instead.

Sources close to Paula told TMZ that "Robin violated the restraining order and was feet from Paula when she arrived with her son. Julian decided he didn't want to go with his dad and asked her to call 911."

Sources close to Robin alleged that Paula was an hour late - which those close to her have denied - and he remained in the car at all times.

An insider in Robin's team told Us Weekly: "Here's what happens. Paula finally shows up and won't let Julian out of the car, she doesn't want to hand Julian over. The moderator is going between them and Robin is sitting in his car, doing as he's directed. And for some reason she called her housekeeper, and the housekeeper who was at the house, not at the park, mind you, calls the police and says Robin is violating his restraining order. And Robin never got out of his car. Paula then takes Julian and leaves.

"When the police showed up, she was gone. They went up to Robin and they said, 'Someone called saying you broke the restraining order' and he said, 'No, this is my designated spot to pick up my son. We have joint custody and we do this every week, I stay in the car.' He had a full conversation with the police and they didn't do anything. The saddest part about this is that was his only time to see Julian."

However, a source close to Paula told the same publication: "Paula was not an hour late. What happens is, when Paula goes to hand off Julian to Robin, she is supposed to hand him off to a monitor. Robin is not supposed to be there because of the court-ordered restraining order. So he showed up despite the court order, and then Julian said he didn't want to go with his dad as soon as he saw him, so that's why the hand-off didn't end up happening.

A judge granted Paula sole legal and physical custody of their son after she alleged in court documents that her ex physically abused her, was unfaithful and struggles with drug and alcohol addictions.

And under a temporary restraining order taken out against him, Robin is also required to stay 100 yards away from Paula, her mother and Julian outside of the pre-arranged visitation hours.

The 41-year-old star divorced Robin, 39, in 2015 after 21 years together and almost nine years of marriage.