EAST PALESTINE, Ohio (AP) The crew operating a freight train that derailed in East Palestine, Ohio , didnt get much warning before dozens of cars went off the tracks, and there is no indication that crew members did anything wrong, federal investigators said Thursday as they released a preliminary report into the fiery wreck that prompted a toxic chemical release and an evacuation.

U.S. Transportation Secretary Pete Buttigieg made his first visit to the crash site and took shots at former President Donald Trump , who had visited the day before and criticized the federal response to the train derailment. Their back-and-forth was the latest sign that the East Palestine wreck has become a hot-button political issue, prompting a rebuke from the head of the National Transportation Safety Board.

Enough with the politics. I dont understand why this has gotten so political, safety board Chair Jennifer Homendy, clearly exasperated, said at a briefing in Washington, D.C., on Thursday. This is a community that is suffering. This is not about politics. This is about addressing their needs, their concerns.

The NTSB report, which laid out the facts that investigators have gathered to date, said crew members had no indication the train was in trouble until an alarm sounded just before it went off the tracks.

An engineer slowed and stopped the train after getting a critical audible alarm message that signaled an overheated axle, according to the report. The three-person crew then saw fire and smoke and alerted dispatch, the report said.