A person infected with the new Omicron coronavirus variant participated in a large concert on Saturday, the Danish Patient Safety Authority has said.

According to Reuters, the person was one of 1,600 people attending a concert with Danish DJ Martin Jensen in the northern city of Aalborg on Saturday.

Denmark has already confirmed four cases of the new Omicron variant, all of whom had travelled to South Africa.

A spokesperson for the Danish Patient Safety Authority confirmed that the infected concert-goer had been travelling, but declined to say where.