SPRINGFIELD (AP) - State police say one man has died in a rollover accident on Interstate 91 in Springfield.

Investigators say the car was headed north near the exit 9B on-ramp at about 2 a.m. Friday when it crashed, ejecting the driver.

The ramp was closed but no lanes of the highway were affected.

The victim's name was not immediately released.

The cause remains under investigation but police say speed appears to be a factor.