Cristiano Ronaldo grabbed by a fan in chaotic public training session

Cristiano Ronaldo was grabbed by an overenthusiastic fan who invaded Portugal's training field as the team finalized preparations for its Euro 2024 campaign.

With Portugal's Group F opener not until Tuesday in Leipzig, head coach Roberto Martinez staged an open training session in the German city of Gutersloh that allowed the public an early glimpse of Ronaldo and his colleagues.

However, with more than 50,000 supporters having applied for the 6,000 available tickets, scenes soon turned chaotic.

Midway through the session, a fan jumped over the barriers and sprinted onto the field. After slipping past two advancing security guards, he forcibly hugged Ronaldo before being apprehended almost immediately. Ronaldo allowed the fan to take a selfie with him but then raised his arms to appeal for calm from the crowd.

Later, several spectators jumped onto the pitch and ran towards the players, with Portugal goalkeeper Jose Sa tackling one of the intruders before he could advance further.

Martinez has spoken of his wish to tap into the strong support Portugal is likely to receive during the tournament, in large part due to Ronaldo's lingering popularity as he enters what is expected to be the final stages of his career.

Friday's scenes may cause Martinez to rethink future public practices, though Ronaldo did not appear unduly troubled by the attention, apart from the fact that it briefly disrupted the session.

Portugal was the only nation to win each of its 10 games in qualifying. They come in as one of the favorites to win the tournament and will take on Czech Republic (June 18 at 3:00 p.m. ET on FOX and the FOX Sports app). Ronaldo is likely to play a prominent role, despite opinions from some pundits that he would be more