23-year-old woman killed in multi-vehicle crash on I-35 in Round Rock

Round Rock police are investigating Thursday's fatal multi-vehicle crash on southbound I-35.

A 23-year-old woman died in the crash that happened around 7 a.m. March 18 north of the Round Rock Avenue Bridge.

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Police say investigators are looking to speak with a driver who was pulling a dark-colored trailer on that section of highway around 6:30 a.m. that morning. Investigators are also hoping to speak with any witnesses.

Anyone with information about the crash is asked to contact Sgt. Brian Quick at 512-278-3257 or submit an anonymous tip online.

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According to Total Traffic Austin, the crash was between 620/Exit 252 Round Rock Road and McNeil Road on southbound I-35. Traffic was diverted to McNeil Road while first responders were on the scene. I-35 was shut down for several hours.

It's not clear if anyone else was injured in the crash. The cause of the crash remains under investigation.