The accident scene lasts about 2.4 kilometers.
According to the Fort Worth Fire Department, several people are trapped after a highway pile in Fort Worth, Texas.
At least 50 cars were involved, including some that were involved, a police source told ABC News.
The number of people trapped was not immediately clear.
Fort Worth police blame the I-35 accident for the weather – icy rain has caused slippery roads in the Fort Worth area.
The crash scene covers about 2.4 kilometers, reports ABC Dallas subsidiary WFAA.
“Expect long delays,” police warned in a tweet. “There is backing from I30 to 820 in both directions.”
“If you are involved in a minor accident with no injuries, please exchange information and proceed. You can then notify your insurance when you arrive at your destination,” police tweeted.
This is an evolving story. Please come and check for updates.