Authorities say the named as Caicedo Lopez, a 22-year-old Colombian national, was arrested after they tracked the alarming message to his IP address.
A 22-year-old Colombian man was arrested in Costa Rica after authorities suspected him of threatening to attack an Ariana Grande concert.
Twenty-two people were killed in the Manchester Arena attack, including seven children.
Ariana thanked her fans for coming out on her Instagram page where she posted a photo from the show that showed the audience lit up with lights. She postponed her Dangerous Woman Tour following the suicide bombing, but returned to the city of Manchester on 4 June (17) to stage a star-studded charity concert, raising funds for survivors of the attack and the victims' families. She captioned the image: "I love you, Costa Rica" Before the gig she posted a selfie and wrote: "Costa Rica tonight!"
Costa Rica's Judicial Investigative Police, OIJ, launched an immediate investigation into the threat, which was reportedly written in Arabic. He identified the suspect only by the last names Caicedo Lopez. He is accused of visiting the Facebook page of one of the concert promoters and writing a threat in Arabic, warning of acts of violence at the singer's concert, which was scheduled to be held July 9 at the Coca Cola Amphitheater of Parque Viva in La Guacima, Alajuela. "We've lost everything. We have, we've lost everything, because life will just never be the same".