(CNN) Four people were killed when a bus carrying senior citizens on a casino outing collided with a freight train Tuesday in Biloxi, Mississippi, officials said. Previous reports from Biloxi officials fluctuated between three and four deaths. Seven passengers were critically injured, city officials said. "This is a tragic event for our city," Biloxi Mayor Andrew Gilich said. NTSB launching go-team to investigate today's accidentinvolving a train and bus in Biloxi, MS.

Source: CNN March 07, 2017 21:32 UTC