Geri Halliwell is reportedly 'not talking to anyone' as her husband Christian Horner fights to clear his name.
The Red Bull boss' hearing into allegations of inappropriate behaviour will be held on Friday and his wife is said to be 'in full lockdown'.
It emerged on Monday that Horner was facing allegations made by a colleague at the Formula One team.
The 50-year-old Red Bull team principal has flatly denied any wrongdoing, responding: "I completely deny these claims."
Geri Halliwell is said to be in 'full lockdown' following allegations made against Christian Horner
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Red Bull quickly revealed a statement confirming that they would be investigating the allegations.
It read: "After becoming aware of recent allegations, the company initiated an independent investigation.
"This investigation, which is already underway, is being carried out by an external specialised lawyer.
"The company takes these matters extremely seriously and the investigation will be complete as soon as practicable. It would not be appropriate to make any further comments at this time."
Horner married Spice Girl Halliwell in 2015 and reports say she is set to stand by her husband.
It was claimed on Tuesday that Halliwell has been in 'floors of tears' following Monday's news and was left 'devastated' over the allegations.
A friend has now revealed more about the 51-year-old's current state of mind.
The pal says Halliwell is not wanting to talk to anybody because she is too upset about the situation.
But Halliwell will continue to stand by Horner throughout the process.
The friend told the Daily Mail: "Geri is in full lockdown and not talking to anyone at the moment.
"Christian is speaking privately and says that he will clear his name and come through this, but Geri seems to be simply too upset to engage with anyone. Just lots of tears.
"She will stand by him and be at his side just as much as she always has been. She never misses a race and that will not change."
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Christian Horner and Geri Halliwell have been married since 2015
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Horner has been the team principal of Red Bull since 2005 and has led the team to seven World Drivers' Championships and six World Constructors' Championships.
However, the team's plans ahead of the new season have been thrown into chaos in the last few days.
Red Bull are set to launch their new car for the 2024 campaign next week.
But former F1 driver Giedo van der Garde does not think Horner will be present at the unveiling.
Christian Horner will face a Red Bull hearing on Friday
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Speaking to the DRS De Race Show podcast, he said: "No [I don't think he will be at the launch].
"Horner is being checked out internally by Red Bull.
"Believe me, when that presentation comes next week, Horner will definitely not be there."