Under UK Government regulations, all mobile and static tattoo parlours much remain closed while lockdown is on.
But neither the Gabon international or Bernal were wearing face masks in the picture that was posted on the Alxink8 account.
Arsenal now want to know if Aubameyang has compromised their secure bubble, especially after supporting him so well in recent weeks.
And, if he’s found guilty of falling foul of the rules, then Arteta will be far from happy.
Meanwhile, BBC Sport pundit Garth Crooks has named Aubameyang in his team of the week – and praised the veteran for his showing against Leeds.