Three have been arrested in a murder investigation after a bar fire in Denver Wednesday. The three suspects are allegedly involved with a murder and arson that left five dead and a bar destroyed. The bodies all received gunshot wounds but the coroner has not yet released a cause of death. Police did say the bar was set on fire to cover up a crime. The three suspects arrested appeared in court yesterday and two of them have prior charges. One pled guilty to robbery charges in 2008 and another served probation from a deferred judgment for assault. Investigators arrested the three after receiving several tips from the public. The investigation is ongoing.