Arsenal are investigating a possible breach of coronavirus regulations by club captain Pierre-Emerick Aubameyang.
The Gabonese international appeared to break lockdown rules to get a new tattoo.
He was pictured showing off the inking on the Instagram account of Spanish tattoo artist Alejandro Nicolas Bernal.
And the footage was posted just days after Aubameyang had been given time off by the club to visit his ill mother in France.
Under UK Government regulations, all mobile and static tattoo parlours must remain closed during the coronavirus pandemic.
But neither Aubameyang nor Barcelona-based Bernal were wearing a mask during the session to decorate the player’s hand.
It was not clear when or where the tattoo work was carried out but the film was posted five days ago on the alexink8 account.
It appears to have taken place in some kind of industrial area.
Now Arsenal want to enquire if Aubameyang has compromised their biosecure bubble.
The 31-year-old was given permission by manager Mikel Arteta to travel to France on a mercy mission when his mother, Margarita, was taken seriously ill three weeks ago.
He missed Arsenal’s FA Cup loss at Southampton and the Premier League games away to Southampton and at home to Manchester United.
He returned to the starting line-up on Sunday and scored his first Premier League hat-trick in the 4-2 win against Leeds, when he kept his hands hidden by gloves.
An Arsenal spokesman said on Monday night: “We will speak to the player about this matter and establish what has taken place.”