Hertfordshire Police has apologised for posting warning messages on Twitter about countries playing in the World Cup in Brazil.
When Colombia played Uruguay on Saturday the force warned about drug problems in the South American Country.
Another tweet involving Nigeria said: "British nationals are increasingly being targeted by scam artists operating in West Africa."
The tweets were removed after complaints that they stigmatise countries.
A spokesman said: "The tweets featured information from research into crime issues for the countries involved in the World Cup.
"They were designed to provide crime prevention advice about issues that may affect people in Hertfordshire.
"We would like to apologise to anyone who has been offended by the tweets issued by Hertfordshire Constabulary linked to the World Cup."