Citizen: crime app falsely accused a homeless man of starting a wildfire

The app offered a $30,000 reward to track him down and shared a photo of the man, which was seen by more than 861,000 people

The vigilante crime app Citizen falsely accused a California man of starting a wildfire, offering a $30,000 reward to track him down before retracting the post the next day, in a move that has been condemned by criminal justice experts.

The app - which gives users local crime information via police scanners and other sources - shared an alert on Saturday about an alleged arsonist behind a large brush fire that broke out in Los Angeles over the weekend.