UPDATE: Authorities say two Union Pacific train crew members were killed and two were injured when two freight trains collided in northeast Arkansas.
Arkansas State Police said in a statement they were called to the site about 3 a.m. Sunday in Hoxie.
Union Pacific spokesman Brandon Morris says two cars caught fire, one carrying diesel and one carrying an alcoholic beverage. He says the fire was out about 10 a.m.
Arkansas Department of Emergency Management spokesman Kendell Snyder said no health hazards had been detected from the fire.
The Lawrence County Sheriff's Office said about 500 people were forced to leave their homes, but emergency officials say most were allowed to return by midmorning.
In June 2012, a head-on train crash in the Oklahoma Panhandle killed three Union Pacific crewmembers.
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---------------------------------HOXIE, Ark. (AP) - Arkansas State Police say two people have died and two are injured after two Union Pacific freight trains collided in northeast Arkansas.Arkansas State Police spokesman Bill Sadler said in a news release that authorities were called to the collision about 3 a.m. Sunday near Hoxie.Sadler said railroad officials told police both trains were carrying toxic chemical cargo. A large number of Hoxie residents have been evacuated.Arkansas Department of Emergency Management spokesman Kendell Snyder told the Arkansas Democrat-Gazette (http://bit.ly/1oStTeq ) he doesn't know what the toxic substance is. He also said one engine is on fire and crews are trying to put it out.Sadler said the dead and injured are believed to be train crew members.Sadler told the newspaper Union Pacific representatives will lead the investigation.