NEWTOWN, Conn. (WTNH) – Fourteen cows died after a tractor-trailer rolled over Thursday morning on Interstate 84 in Newtown, the state Department of Agriculture said.

The Sandy Hook Volunteer Fire & Rescue said the tractor-trailer rolled over around 3:30 a.m. on the I-84 West Exit 10 off-ramp. Officials said the truck was carrying 44 cows when it rolled over.

State officials said eight cows died in the crash, and six were euthanized. Crews used the jaws of life on the two-story cattle pod to free the other 30 cows, which were evaluated by the state veterinarian and are doing well, according to state officials.

The tractor-trailer driver was not injured. The Exit 10 off-ramp was shut down for hours but has since reopened.

No word yet on what caused the crash.

Stay with News 8 for updates.