The Elko County Sheriff's Office says I-80 is back open in both directions east of Wells after a train derailed in that area Wednesday morning.

The incident happened around 10:00 a.m. on Wednesday. 

NDOT says I-80 was closed specifically between mile marker 350 through mile marker 356 for about an hour. A traffic camera in that area shows what appears to be smoke rising in the air, but there is no official confirmation it is related to the actual train derailment.  

Elko County Sheriff's Deputies say the train was carrying munitions including grenades and bombs, but the rail cars containing the munitions are on the opposite end of the train, away from the derailment. Deputies say the white powder seen in photos and videos is reported to be aluminum oxide, a skin irritant. Nevada Highway Patrol says the substance is not hazardous. 

Union Pacific says some diesel also spilled in the incident. Earlier, it had reported that vegetable oil was on the train, but they told us that information is now incorrect. 

NHP says the train made a stop in Winnemucca and was bound for Hawthorne when it derailed close to Wells. 

UP says 23 total cars were involved in the derailment. Elko County says 19 derailed at the site.

Authorities say cleanup continues and the cause of the derailment remains under investigation.  

UP says no one was hurt.