The Spanish teenager punched by Justin Bieber is considering legal action.

Kevin Ramirez, 18, startled the singer when he grabbed at him through an open car window as Bieber arrived at a gig in Barcelona, Spain, on Tuesday (22Nov16).

The Baby star reacted quickly and punched Ramirez, leaving him with a bloody lip.

Speaking to Spanish journalist Julia Otero on her Onda Cero radio show on Thursday (24Nov16), Ramirez said he was "disappointed and very hurt" by the singer's actions.

"This matter is now in the hands of lawyers," he added. "They will deal with it. I can't give out any more information at the moment."

Ramirez insisted he didn't intend to anger Bieber with his actions, and was just hoping to convey his love of the singer. However, he insisted the Love Yourself star's reaction was "unnecessary".

"I didn't think for one moment Justin was going to punch me," he said. "He had been in the airport the day before talking with fans and I assumed he was happy to get close to us.

"When I saw him I took the opportunity to put my hand through his car window and touch his shoulder and face in true 'Affectionate fan wants to touch his idol' style.

"His car had stopped before he went by and he had seen us. He knew there were no barriers and he knew we were going to go up to him. He could have brushed my hand away, anything apart from such an aggressive punch."

After the punch, Ramirez abandoned his plans to see Bieber perform at the Palau Sant Jordi, opting instead to go home. His friends who also had tickets to the show also declined to watch the singer in action.

"I was left in a state of total shock. I couldn't believe what he did," Ramirez added. "I liked Justin but I come first. He doesn't appear to like his fans now."

According to the Daily Mirror, police in the city described the punching as a "misdemeanour", not a crime, but added that Ramirez could file a formal complaint against Bieber through them or at a local court.