Traffic is at a standstill on the westbound lanes of the expressway in Alamo following a hit-and-run crash, police said.

The KRGV traffic map shows a major traffic jam in the westbound lanes of the expressway between Val Verde and Tower roads.

A spokesperson for the Alamo Police Department said the traffic is due to a major accident from a hit-and-run crash, but additional information was not available.

This is a developing story, check back for updates.