UPDATE 3:03 p.m.
According to a spokesperson at the town of Marana, the train has cleared the tracks.
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Union Pacific is working on a train breakdown near I-10 and Cortaro.
The train is blocking a crossing in Marana due to mechanical issues.
Drivers should expect delays.
"We apologize for the inconvenience and disruption to motorists as it is stopped for inspection," Union Pacific said.
Stay with KGUN 9 for further updates.
