UPDATE: All downtown Norcross railroad crossings have re-opened after a stopped train blocked traffic for more than an hour. 

Original story: A stopped train is snarling traffic in downtown Norcross, according to police.

The train is stopped on the tracks, blocking traffic from both directions on multiple downtown streets, according to a Norcross Police Department tweet. No further information was immediately available.

Police said drivers should use Jimmy Carter Boulevard as a detour. Check back with AJC.com for updates.